def verify(self):
self.assert_shard_data_equal(0, worker.shard_master,
worker.shard_0_tablets.replica)
self.assert_shard_data_equal(1, worker.shard_master,
worker.shard_1_tablets.replica)
# Verify effect of MigrateServedTypes. Dest shards are serving now.
utils.check_srv_keyspace(
'test_nj', self.KEYSPACE, 'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -80 80-\n')
# source shard: query service must be disabled after MigrateServedTypes.
source_shards = [
worker.shard_rdonly1, worker.shard_replica, worker.shard_master
]
for shard in source_shards:
utils.check_tablet_query_service(self,
shard,
serving=False,
tablet_control_disabled=True)
# dest shard -80, 80-: query service must be enabled
# after MigrateServedTypes.
dest_shards = [
worker.shard_0_rdonly1, worker.shard_0_replica,
worker.shard_0_master, worker.shard_1_rdonly1,
worker.shard_1_replica, worker.shard_1_master
]
for shard in dest_shards:
utils.check_tablet_query_service(self,
shard,
serving=True,
tablet_control_disabled=False)
def test_resharding(self):
# we're going to reparent and swap these two
global shard_2_master, shard_2_replica1
utils.run_vtctl([
'CreateKeyspace', '--sharding_column_name', 'bad_column',
'--sharding_column_type', 'bytes', '--split_shard_count', '2',
'test_keyspace'
])
utils.run_vtctl([
'SetKeyspaceShardingInfo', 'test_keyspace', 'keyspace_id', 'uint64'
],
expect_fail=True)
utils.run_vtctl([
'SetKeyspaceShardingInfo', '-force', '-split_shard_count', '4',
'test_keyspace', 'keyspace_id', keyspace_id_type
])
shard_0_master.init_tablet('master', 'test_keyspace', '-80')
shard_0_replica.init_tablet('replica', 'test_keyspace', '-80')
shard_0_ny_rdonly.init_tablet('rdonly', 'test_keyspace', '-80')
shard_1_master.init_tablet('master', 'test_keyspace', '80-')
shard_1_slave1.init_tablet('replica', 'test_keyspace', '80-')
shard_1_slave2.init_tablet('spare', 'test_keyspace', '80-')
shard_1_ny_rdonly.init_tablet('rdonly', 'test_keyspace', '80-')
shard_1_rdonly1.init_tablet('rdonly', 'test_keyspace', '80-')
utils.run_vtctl(['RebuildKeyspaceGraph', 'test_keyspace'],
auto_log=True)
ks = utils.run_vtctl_json(
['GetSrvKeyspace', 'test_nj', 'test_keyspace'])
self.assertEqual(ks['split_shard_count'], 4)
# we set full_mycnf_args to True as a test in the KIT_BYTES case
full_mycnf_args = keyspace_id_type == keyrange_constants.KIT_BYTES
# create databases so vttablet can start behaving normally
for t in [
shard_0_master, shard_0_replica, shard_0_ny_rdonly,
shard_1_master, shard_1_slave1, shard_1_slave2,
shard_1_ny_rdonly, shard_1_rdonly1
]:
t.create_db('vt_test_keyspace')
t.start_vttablet(wait_for_state=None,
full_mycnf_args=full_mycnf_args)
# wait for the tablets
shard_0_master.wait_for_vttablet_state('SERVING')
shard_0_replica.wait_for_vttablet_state('SERVING')
shard_0_ny_rdonly.wait_for_vttablet_state('SERVING')
shard_1_master.wait_for_vttablet_state('SERVING')
shard_1_slave1.wait_for_vttablet_state('SERVING')
shard_1_slave2.wait_for_vttablet_state('NOT_SERVING') # spare
shard_1_ny_rdonly.wait_for_vttablet_state('SERVING')
shard_1_rdonly1.wait_for_vttablet_state('SERVING')
# reparent to make the tablets work
utils.run_vtctl([
'InitShardMaster', 'test_keyspace/-80', shard_0_master.tablet_alias
],
auto_log=True)
utils.run_vtctl([
'InitShardMaster', 'test_keyspace/80-', shard_1_master.tablet_alias
],
auto_log=True)
# create the tables
self._create_schema()
self._insert_startup_values()
self._test_keyrange_constraints()
# run a health check on source replicas so they respond to discovery
# (for binlog players) and on the source rdonlys (for workers)
for t in [shard_0_replica, shard_1_slave1]:
utils.run_vtctl(['RunHealthCheck', t.tablet_alias, 'replica'])
for t in [shard_0_ny_rdonly, shard_1_ny_rdonly, shard_1_rdonly1]:
utils.run_vtctl(['RunHealthCheck', t.tablet_alias, 'rdonly'])
# create the split shards
shard_2_master.init_tablet('master', 'test_keyspace', '80-c0')
shard_2_replica1.init_tablet('spare', 'test_keyspace', '80-c0')
shard_2_replica2.init_tablet('spare', 'test_keyspace', '80-c0')
shard_3_master.init_tablet('master', 'test_keyspace', 'c0-')
shard_3_replica.init_tablet('spare', 'test_keyspace', 'c0-')
shard_3_rdonly1.init_tablet('rdonly', 'test_keyspace', 'c0-')
# start vttablet on the split shards (no db created,
# so they're all not serving)
shard_3_master.start_vttablet(wait_for_state=None,
target_tablet_type='replica')
for t in [
shard_2_master, shard_2_replica1, shard_2_replica2,
shard_3_replica, shard_3_rdonly1
]:
t.start_vttablet(wait_for_state=None)
for t in [
shard_2_master, shard_2_replica1, shard_2_replica2,
shard_3_master, shard_3_replica, shard_3_rdonly1
]:
t.wait_for_vttablet_state('NOT_SERVING')
utils.run_vtctl([
'InitShardMaster', 'test_keyspace/80-c0',
shard_2_master.tablet_alias
],
auto_log=True)
utils.run_vtctl([
'InitShardMaster', 'test_keyspace/c0-', shard_3_master.tablet_alias
],
auto_log=True)
utils.run_vtctl(['RebuildKeyspaceGraph', 'test_keyspace'],
auto_log=True)
utils.check_srv_keyspace('test_nj',
'test_keyspace',
'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=keyspace_id_type)
# the worker will do everything. We test with source_reader_count=10
# (down from default=20) as connection pool is not big enough for 20.
# min_table_size_for_split is set to 1 as to force a split even on the
# small table we have.
# we need to create the schema, and the worker will do data copying
for keyspace_shard in ('test_keyspace/80-c0', 'test_keyspace/c0-'):
utils.run_vtctl([
'CopySchemaShard', '--exclude_tables', 'unrelated',
shard_1_rdonly1.tablet_alias, keyspace_shard
],
auto_log=True)
utils.run_vtworker([
'--cell', 'test_nj', '--command_display_interval', '10ms',
'SplitClone', '--exclude_tables', 'unrelated',
'--strategy=-populate_blp_checkpoint', '--source_reader_count',
'10', '--min_table_size_for_split', '1', 'test_keyspace/80-'
],
auto_log=True)
utils.run_vtctl(
['ChangeSlaveType', shard_1_rdonly1.tablet_alias, 'rdonly'],
auto_log=True)
# TODO(alainjobart): experiment with the dontStartBinlogPlayer option
# check the startup values are in the right place
self._check_startup_values()
# check the schema too
utils.run_vtctl([
'ValidateSchemaKeyspace', '--exclude_tables=unrelated',
'test_keyspace'
],
auto_log=True)
# check the binlog players are running and exporting vars
shard_2_master.wait_for_binlog_player_count(1)
shard_3_master.wait_for_binlog_player_count(1)
self._check_binlog_player_vars(shard_2_master)
self._check_binlog_player_vars(shard_3_master)
# check that binlog server exported the stats vars
self._check_binlog_server_vars(shard_1_slave1)
self._check_stream_health_equals_binlog_player_vars(shard_2_master)
self._check_stream_health_equals_binlog_player_vars(shard_3_master)
# testing filtered replication: insert a bunch of data on shard 1,
# check we get most of it after a few seconds, wait for binlog server
# timeout, check we get all of it.
logging.debug('Inserting lots of data on source shard')
self._insert_lots(1000)
logging.debug('Checking 80 percent of data is sent quickly')
v = self._check_lots_timeout(1000, 80, 5)
if v != 100:
# small optimization: only do this check if we don't have all the data
# already anyway.
logging.debug('Checking all data goes through eventually')
self._check_lots_timeout(1000, 100, 20)
logging.debug('Checking no data was sent the wrong way')
self._check_lots_not_present(1000)
self._check_binlog_player_vars(shard_2_master,
seconds_behind_master_max=30)
self._check_binlog_player_vars(shard_3_master,
seconds_behind_master_max=30)
# use vtworker to compare the data (after health-checking the destination
# rdonly tablets so discovery works)
utils.run_vtctl(
['RunHealthCheck', shard_3_rdonly1.tablet_alias, 'rdonly'])
logging.debug('Running vtworker SplitDiff')
utils.run_vtworker([
'-cell', 'test_nj', 'SplitDiff', '--exclude_tables', 'unrelated',
'test_keyspace/c0-'
],
auto_log=True)
utils.run_vtctl(
['ChangeSlaveType', shard_1_rdonly1.tablet_alias, 'rdonly'],
auto_log=True)
utils.run_vtctl(
['ChangeSlaveType', shard_3_rdonly1.tablet_alias, 'rdonly'],
auto_log=True)
utils.pause('Good time to test vtworker for diffs')
# get status for a destination master tablet, make sure we have it all
shard_2_master_status = shard_2_master.get_status()
self.assertIn('Binlog player state: Running', shard_2_master_status)
self.assertIn(
'<td><b>All</b>: 6000<br><b>Query</b>: 4000<br>'
'<b>Transaction</b>: 2000<br></td>', shard_2_master_status)
self.assertIn('</html>', shard_2_master_status)
# start a thread to insert data into shard_1 in the background
# with current time, and monitor the delay
insert_thread_1 = InsertThread(shard_1_master, 'insert_low', 10000,
0x9000000000000000)
insert_thread_2 = InsertThread(shard_1_master, 'insert_high', 10001,
0xD000000000000000)
monitor_thread_1 = MonitorLagThread(shard_2_replica2, 'insert_low')
monitor_thread_2 = MonitorLagThread(shard_3_replica, 'insert_high')
# tests a failover switching serving to a different replica
utils.run_vtctl(
['ChangeSlaveType', shard_1_slave2.tablet_alias, 'replica'])
utils.run_vtctl(
['ChangeSlaveType', shard_1_slave1.tablet_alias, 'spare'])
shard_1_slave2.wait_for_vttablet_state('SERVING')
shard_1_slave1.wait_for_vttablet_state('NOT_SERVING')
utils.run_vtctl(
['RunHealthCheck', shard_1_slave2.tablet_alias, 'replica'])
# test data goes through again
logging.debug('Inserting lots of data on source shard')
self._insert_lots(1000, base=1000)
logging.debug('Checking 80 percent of data was sent quickly')
self._check_lots_timeout(1000, 80, 5, base=1000)
# check we can't migrate the master just yet
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/80-', 'master'],
expect_fail=True)
# check query service is off on master 2 and master 3, as filtered
# replication is enabled. Even health check that is enabled on
# master 3 should not interfere (we run it to be sure).
utils.run_vtctl(
['RunHealthCheck', shard_3_master.tablet_alias, 'replica'],
auto_log=True)
for master in [shard_2_master, shard_3_master]:
utils.check_tablet_query_service(self, master, False, False)
stream_health = utils.run_vtctl_json(
['VtTabletStreamHealth', '-count', '1', master.tablet_alias])
logging.debug('Got health: %s', str(stream_health))
self.assertIn('realtime_stats', stream_health)
self.assertNotIn('serving', stream_health)
# check the destination master 3 is healthy, even though its query
# service is not running (if not healthy this would exception out)
shard_3_master.get_healthz()
# now serve rdonly from the split shards, in test_nj only
utils.run_vtctl([
'MigrateServedTypes', '--cells=test_nj', 'test_keyspace/80-',
'rdonly'
],
auto_log=True)
utils.check_srv_keyspace('test_nj',
'test_keyspace',
'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-c0 c0-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=keyspace_id_type)
utils.check_srv_keyspace('test_ny',
'test_keyspace',
'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=keyspace_id_type)
utils.check_tablet_query_service(self, shard_0_ny_rdonly, True, False)
utils.check_tablet_query_service(self, shard_1_ny_rdonly, True, False)
utils.check_tablet_query_service(self, shard_1_rdonly1, False, True)
# now serve rdonly from the split shards, everywhere
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/80-', 'rdonly'],
auto_log=True)
utils.check_srv_keyspace('test_nj',
'test_keyspace',
'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-c0 c0-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=keyspace_id_type)
utils.check_srv_keyspace('test_ny',
'test_keyspace',
'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-c0 c0-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=keyspace_id_type)
utils.check_tablet_query_service(self, shard_0_ny_rdonly, True, False)
utils.check_tablet_query_service(self, shard_1_ny_rdonly, False, True)
utils.check_tablet_query_service(self, shard_1_rdonly1, False, True)
# then serve replica from the split shards
destination_shards = ['test_keyspace/80-c0', 'test_keyspace/c0-']
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/80-', 'replica'],
auto_log=True)
utils.check_srv_keyspace('test_nj',
'test_keyspace',
'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-c0 c0-\n'
'Partitions(replica): -80 80-c0 c0-\n',
keyspace_id_type=keyspace_id_type)
utils.check_tablet_query_service(self, shard_1_slave2, False, True)
# move replica back and forth
utils.run_vtctl(
['MigrateServedTypes', '-reverse', 'test_keyspace/80-', 'replica'],
auto_log=True)
# After a backwards migration, queryservice should be enabled on
# source and disabled on destinations
utils.check_tablet_query_service(self, shard_1_slave2, True, False)
# Destination tablets would have query service disabled for other
# reasons than the migration, so check the shard record instead of
# the tablets directly.
utils.check_shard_query_services(self, destination_shards,
topodata_pb2.REPLICA, False)
utils.check_srv_keyspace('test_nj',
'test_keyspace',
'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-c0 c0-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=keyspace_id_type)
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/80-', 'replica'],
auto_log=True)
# After a forwards migration, queryservice should be disabled on
# source and enabled on destinations
utils.check_tablet_query_service(self, shard_1_slave2, False, True)
# Destination tablets would have query service disabled for other
# reasons than the migration, so check the shard record instead of
# the tablets directly
utils.check_shard_query_services(self, destination_shards,
topodata_pb2.REPLICA, True)
utils.check_srv_keyspace('test_nj',
'test_keyspace',
'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-c0 c0-\n'
'Partitions(replica): -80 80-c0 c0-\n',
keyspace_id_type=keyspace_id_type)
# reparent shard_2 to shard_2_replica1, then insert more data and
# see it flow through still
utils.run_vtctl([
'PlannedReparentShard', 'test_keyspace/80-c0',
shard_2_replica1.tablet_alias
])
# update our test variables to point at the new master
shard_2_master, shard_2_replica1 = shard_2_replica1, shard_2_master
logging.debug(
'Inserting lots of data on source shard after reparenting')
self._insert_lots(3000, base=2000)
logging.debug('Checking 80 percent of data was sent fairly quickly')
self._check_lots_timeout(3000, 80, 10, base=2000)
# use vtworker to compare the data again
logging.debug('Running vtworker SplitDiff')
utils.run_vtworker([
'-cell', 'test_nj', 'SplitDiff', '--exclude_tables', 'unrelated',
'test_keyspace/c0-'
],
auto_log=True)
utils.run_vtctl(
['ChangeSlaveType', shard_1_rdonly1.tablet_alias, 'rdonly'],
auto_log=True)
utils.run_vtctl(
['ChangeSlaveType', shard_3_rdonly1.tablet_alias, 'rdonly'],
auto_log=True)
# going to migrate the master now, check the delays
monitor_thread_1.done = True
monitor_thread_2.done = True
insert_thread_1.done = True
insert_thread_2.done = True
logging.debug('DELAY 1: %s max_lag=%d avg_lag=%d',
monitor_thread_1.object_name, monitor_thread_1.max_lag,
monitor_thread_1.lag_sum / monitor_thread_1.sample_count)
logging.debug('DELAY 2: %s max_lag=%d avg_lag=%d',
monitor_thread_2.object_name, monitor_thread_2.max_lag,
monitor_thread_2.lag_sum / monitor_thread_2.sample_count)
# mock with the SourceShard records to test 'vtctl SourceShardDelete'
# and 'vtctl SourceShardAdd'
utils.run_vtctl(['SourceShardDelete', 'test_keyspace/c0-', '0'],
auto_log=True)
utils.run_vtctl([
'SourceShardAdd', '--key_range=80-', 'test_keyspace/c0-', '0',
'test_keyspace/80-'
],
auto_log=True)
# then serve master from the split shards, make sure the source master's
# query service is now turned off
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/80-', 'master'],
auto_log=True)
utils.check_srv_keyspace('test_nj',
'test_keyspace',
'Partitions(master): -80 80-c0 c0-\n'
'Partitions(rdonly): -80 80-c0 c0-\n'
'Partitions(replica): -80 80-c0 c0-\n',
keyspace_id_type=keyspace_id_type)
utils.check_tablet_query_service(self, shard_1_master, False, True)
# check the binlog players are gone now
shard_2_master.wait_for_binlog_player_count(0)
shard_3_master.wait_for_binlog_player_count(0)
# get status for a destination master tablet, make sure it's good
shard_2_master_status = shard_2_master.get_status()
self.assertIn('No binlog player is running', shard_2_master_status)
self.assertIn('</html>', shard_2_master_status)
# delete the original tablets in the original shard
tablet.kill_tablets([
shard_1_master, shard_1_slave1, shard_1_slave2, shard_1_ny_rdonly,
shard_1_rdonly1
])
for t in [
shard_1_slave1, shard_1_slave2, shard_1_ny_rdonly,
shard_1_rdonly1
]:
utils.run_vtctl(['DeleteTablet', t.tablet_alias], auto_log=True)
utils.run_vtctl(
['DeleteTablet', '-allow_master', shard_1_master.tablet_alias],
auto_log=True)
# rebuild the serving graph, all mentions of the old shards shoud be gone
utils.run_vtctl(['RebuildKeyspaceGraph', 'test_keyspace'],
auto_log=True)
# test RemoveShardCell
utils.run_vtctl(['RemoveShardCell', 'test_keyspace/-80', 'test_nj'],
auto_log=True,
expect_fail=True)
utils.run_vtctl(['RemoveShardCell', 'test_keyspace/80-', 'test_nj'],
auto_log=True)
utils.run_vtctl(['RemoveShardCell', 'test_keyspace/80-', 'test_ny'],
auto_log=True)
shard = utils.run_vtctl_json(['GetShard', 'test_keyspace/80-'])
self.assertNotIn('cells', shard)
# delete the original shard
utils.run_vtctl(['DeleteShard', 'test_keyspace/80-'], auto_log=True)
# kill everything
tablet.kill_tablets([
shard_0_master, shard_0_replica, shard_0_ny_rdonly, shard_2_master,
shard_2_replica1, shard_2_replica2, shard_3_master,
shard_3_replica, shard_3_rdonly1
])
def test_resharding(self):
utils.run_vtctl([
'CreateKeyspace', '--sharding_column_name', 'bad_column',
'--sharding_column_type', 'bytes', 'test_keyspace'
])
utils.run_vtctl([
'SetKeyspaceShardingInfo', 'test_keyspace', 'custom_ksid_col',
'uint64'
],
expect_fail=True)
utils.run_vtctl([
'SetKeyspaceShardingInfo', '-force', 'test_keyspace',
'custom_ksid_col', keyspace_id_type
])
shard_0_master.init_tablet('replica', 'test_keyspace', '-80')
shard_0_replica.init_tablet('replica', 'test_keyspace', '-80')
shard_0_ny_rdonly.init_tablet('rdonly', 'test_keyspace', '-80')
shard_1_master.init_tablet('replica', 'test_keyspace', '80-')
shard_1_slave1.init_tablet('replica', 'test_keyspace', '80-')
shard_1_slave2.init_tablet('replica', 'test_keyspace', '80-')
shard_1_ny_rdonly.init_tablet('rdonly', 'test_keyspace', '80-')
shard_1_rdonly1.init_tablet('rdonly', 'test_keyspace', '80-')
utils.run_vtctl(['RebuildKeyspaceGraph', 'test_keyspace'],
auto_log=True)
ks = utils.run_vtctl_json(
['GetSrvKeyspace', 'test_nj', 'test_keyspace'])
self.assertEqual(ks['sharding_column_name'], 'custom_ksid_col')
# we set full_mycnf_args to True as a test in the KIT_BYTES case
full_mycnf_args = keyspace_id_type == keyrange_constants.KIT_BYTES
# create databases so vttablet can start behaving somewhat normally
for t in [
shard_0_master, shard_0_replica, shard_0_ny_rdonly,
shard_1_master, shard_1_slave1, shard_1_slave2,
shard_1_ny_rdonly, shard_1_rdonly1
]:
t.create_db('vt_test_keyspace')
t.start_vttablet(wait_for_state=None,
full_mycnf_args=full_mycnf_args)
# wait for the tablets (replication is not setup, they won't be healthy)
for t in [
shard_0_master, shard_0_replica, shard_0_ny_rdonly,
shard_1_master, shard_1_slave1, shard_1_slave2,
shard_1_ny_rdonly, shard_1_rdonly1
]:
t.wait_for_vttablet_state('NOT_SERVING')
# reparent to make the tablets work
utils.run_vtctl([
'InitShardMaster', '-force', 'test_keyspace/-80',
shard_0_master.tablet_alias
],
auto_log=True)
utils.run_vtctl([
'InitShardMaster', '-force', 'test_keyspace/80-',
shard_1_master.tablet_alias
],
auto_log=True)
# check the shards
shards = utils.run_vtctl_json(
['FindAllShardsInKeyspace', 'test_keyspace'])
self.assertIn('-80', shards, 'unexpected shards: %s' % str(shards))
self.assertIn('80-', shards, 'unexpected shards: %s' % str(shards))
self.assertEqual(len(shards), 2, 'unexpected shards: %s' % str(shards))
# create the tables
self._create_schema()
self._insert_startup_values()
# run a health check on source replicas so they respond to discovery
# (for binlog players) and on the source rdonlys (for workers)
for t in [shard_0_replica, shard_1_slave1]:
utils.run_vtctl(['RunHealthCheck', t.tablet_alias])
for t in [shard_0_ny_rdonly, shard_1_ny_rdonly, shard_1_rdonly1]:
utils.run_vtctl(['RunHealthCheck', t.tablet_alias])
# create the split shards
shard_2_master.init_tablet('replica', 'test_keyspace', '80-c0')
shard_2_replica1.init_tablet('replica', 'test_keyspace', '80-c0')
shard_2_replica2.init_tablet('replica', 'test_keyspace', '80-c0')
shard_3_master.init_tablet('replica', 'test_keyspace', 'c0-')
shard_3_replica.init_tablet('replica', 'test_keyspace', 'c0-')
shard_3_rdonly1.init_tablet('rdonly', 'test_keyspace', 'c0-')
# start vttablet on the split shards (no db created,
# so they're all not serving)
shard_2_master.start_vttablet(wait_for_state=None)
shard_3_master.start_vttablet(wait_for_state=None)
for t in [
shard_2_replica1, shard_2_replica2, shard_3_replica,
shard_3_rdonly1
]:
t.start_vttablet(wait_for_state=None)
for t in [
shard_2_master, shard_2_replica1, shard_2_replica2,
shard_3_master, shard_3_replica, shard_3_rdonly1
]:
t.wait_for_vttablet_state('NOT_SERVING')
utils.run_vtctl([
'InitShardMaster', '-force', 'test_keyspace/80-c0',
shard_2_master.tablet_alias
],
auto_log=True)
utils.run_vtctl([
'InitShardMaster', '-force', 'test_keyspace/c0-',
shard_3_master.tablet_alias
],
auto_log=True)
# check the shards
shards = utils.run_vtctl_json(
['FindAllShardsInKeyspace', 'test_keyspace'])
for s in ['-80', '80-', '80-c0', 'c0-']:
self.assertIn(s, shards, 'unexpected shards: %s' % str(shards))
self.assertEqual(len(shards), 4, 'unexpected shards: %s' % str(shards))
utils.run_vtctl(['RebuildKeyspaceGraph', 'test_keyspace'],
auto_log=True)
utils.check_srv_keyspace('test_nj',
'test_keyspace',
'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=keyspace_id_type,
sharding_column_name='custom_ksid_col')
# disable shard_1_slave2, so we're sure filtered replication will go
# from shard_1_slave1
utils.run_vtctl(
['ChangeSlaveType', shard_1_slave2.tablet_alias, 'spare'])
shard_1_slave2.wait_for_vttablet_state('NOT_SERVING')
# we need to create the schema, and the worker will do data copying
for keyspace_shard in ('test_keyspace/80-c0', 'test_keyspace/c0-'):
utils.run_vtctl([
'CopySchemaShard', '--exclude_tables', 'unrelated',
shard_1_rdonly1.tablet_alias, keyspace_shard
],
auto_log=True)
# --max_tps is only specified to enable the throttler and ensure that the
# code is executed. But the intent here is not to throttle the test, hence
# the rate limit is set very high.
utils.run_vtworker([
'--cell', 'test_nj', '--command_display_interval', '10ms',
'LegacySplitClone', '--exclude_tables', 'unrelated',
'--min_healthy_rdonly_tablets', '1', '--max_tps', '9999',
'test_keyspace/80-'
],
auto_log=True)
utils.run_vtctl(
['ChangeSlaveType', shard_1_rdonly1.tablet_alias, 'rdonly'],
auto_log=True)
# TODO(alainjobart): experiment with the dontStartBinlogPlayer option
# check the startup values are in the right place
self._check_startup_values()
# check the schema too
utils.run_vtctl([
'ValidateSchemaKeyspace', '--exclude_tables=unrelated',
'test_keyspace'
],
auto_log=True)
# check the binlog players are running and exporting vars
self.check_destination_master(shard_2_master, ['test_keyspace/80-'])
self.check_destination_master(shard_3_master, ['test_keyspace/80-'])
# check that binlog server exported the stats vars
self.check_binlog_server_vars(shard_1_slave1, horizontal=True)
# Check that the throttler was enabled.
self.check_throttler_service(shard_2_master.rpc_endpoint(),
['BinlogPlayer/0'], 9999)
self.check_throttler_service(shard_3_master.rpc_endpoint(),
['BinlogPlayer/0'], 9999)
# testing filtered replication: insert a bunch of data on shard 1,
# check we get most of it after a few seconds, wait for binlog server
# timeout, check we get all of it.
logging.debug('Inserting lots of data on source shard')
self._insert_lots(1000)
logging.debug('Checking 80 percent of data is sent quickly')
v = self._check_lots_timeout(1000, 80, 5)
if v != 100:
# small optimization: only do this check if we don't have all the data
# already anyway.
logging.debug('Checking all data goes through eventually')
self._check_lots_timeout(1000, 100, 20)
logging.debug('Checking no data was sent the wrong way')
self._check_lots_not_present(1000)
self.check_binlog_player_vars(shard_2_master, ['test_keyspace/80-'],
seconds_behind_master_max=30)
self.check_binlog_player_vars(shard_3_master, ['test_keyspace/80-'],
seconds_behind_master_max=30)
self.check_binlog_server_vars(shard_1_slave1,
horizontal=True,
min_statements=1000,
min_transactions=1000)
# use vtworker to compare the data (after health-checking the destination
# rdonly tablets so discovery works)
utils.run_vtctl(['RunHealthCheck', shard_3_rdonly1.tablet_alias])
logging.debug('Running vtworker SplitDiff')
utils.run_vtworker([
'-cell', 'test_nj', 'SplitDiff', '--exclude_tables', 'unrelated',
'--min_healthy_rdonly_tablets', '1', 'test_keyspace/c0-'
],
auto_log=True)
utils.run_vtctl(
['ChangeSlaveType', shard_1_rdonly1.tablet_alias, 'rdonly'],
auto_log=True)
utils.run_vtctl(
['ChangeSlaveType', shard_3_rdonly1.tablet_alias, 'rdonly'],
auto_log=True)
utils.pause('Good time to test vtworker for diffs')
# get status for destination master tablets, make sure we have it all
self.check_running_binlog_player(shard_2_master, 4000, 2000)
self.check_running_binlog_player(shard_3_master, 4000, 2000)
# tests a failover switching serving to a different replica
utils.run_vtctl(
['ChangeSlaveType', shard_1_slave2.tablet_alias, 'replica'])
utils.run_vtctl(
['ChangeSlaveType', shard_1_slave1.tablet_alias, 'spare'])
shard_1_slave2.wait_for_vttablet_state('SERVING')
shard_1_slave1.wait_for_vttablet_state('NOT_SERVING')
utils.run_vtctl(['RunHealthCheck', shard_1_slave2.tablet_alias])
# test data goes through again
logging.debug('Inserting lots of data on source shard')
self._insert_lots(1000, base=1000)
logging.debug('Checking 80 percent of data was sent quickly')
self._check_lots_timeout(1000, 80, 5, base=1000)
self.check_binlog_server_vars(shard_1_slave2,
horizontal=True,
min_statements=800,
min_transactions=800)
# check we can't migrate the master just yet
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/80-', 'master'],
expect_fail=True)
# check query service is off on master 2 and master 3, as filtered
# replication is enabled. Even health check that is enabled on
# master 3 should not interfere (we run it to be sure).
utils.run_vtctl(['RunHealthCheck', shard_3_master.tablet_alias],
auto_log=True)
for master in [shard_2_master, shard_3_master]:
utils.check_tablet_query_service(self, master, False, False)
stream_health = utils.run_vtctl_json(
['VtTabletStreamHealth', '-count', '1', master.tablet_alias])
logging.debug('Got health: %s', str(stream_health))
self.assertIn('realtime_stats', stream_health)
self.assertNotIn('serving', stream_health)
# check the destination master 3 is healthy, even though its query
# service is not running (if not healthy this would exception out)
shard_3_master.get_healthz()
# now serve rdonly from the split shards, in test_nj only
utils.run_vtctl([
'MigrateServedTypes', '--cells=test_nj', 'test_keyspace/80-',
'rdonly'
],
auto_log=True)
utils.check_srv_keyspace('test_nj',
'test_keyspace',
'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-c0 c0-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=keyspace_id_type,
sharding_column_name='custom_ksid_col')
utils.check_srv_keyspace('test_ny',
'test_keyspace',
'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=keyspace_id_type,
sharding_column_name='custom_ksid_col')
utils.check_tablet_query_service(self, shard_0_ny_rdonly, True, False)
utils.check_tablet_query_service(self, shard_1_ny_rdonly, True, False)
utils.check_tablet_query_service(self, shard_1_rdonly1, False, True)
# now serve rdonly from the split shards, everywhere
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/80-', 'rdonly'],
auto_log=True)
utils.check_srv_keyspace('test_nj',
'test_keyspace',
'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-c0 c0-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=keyspace_id_type,
sharding_column_name='custom_ksid_col')
utils.check_srv_keyspace('test_ny',
'test_keyspace',
'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-c0 c0-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=keyspace_id_type,
sharding_column_name='custom_ksid_col')
utils.check_tablet_query_service(self, shard_0_ny_rdonly, True, False)
utils.check_tablet_query_service(self, shard_1_ny_rdonly, False, True)
utils.check_tablet_query_service(self, shard_1_rdonly1, False, True)
# then serve replica from the split shards
destination_shards = ['test_keyspace/80-c0', 'test_keyspace/c0-']
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/80-', 'replica'],
auto_log=True)
utils.check_srv_keyspace('test_nj',
'test_keyspace',
'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-c0 c0-\n'
'Partitions(replica): -80 80-c0 c0-\n',
keyspace_id_type=keyspace_id_type,
sharding_column_name='custom_ksid_col')
utils.check_tablet_query_service(self, shard_1_slave2, False, True)
# move replica back and forth
utils.run_vtctl(
['MigrateServedTypes', '-reverse', 'test_keyspace/80-', 'replica'],
auto_log=True)
# After a backwards migration, queryservice should be enabled on
# source and disabled on destinations
utils.check_tablet_query_service(self, shard_1_slave2, True, False)
# Destination tablets would have query service disabled for other
# reasons than the migration, so check the shard record instead of
# the tablets directly.
utils.check_shard_query_services(self, destination_shards,
topodata_pb2.REPLICA, False)
utils.check_srv_keyspace('test_nj',
'test_keyspace',
'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-c0 c0-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=keyspace_id_type,
sharding_column_name='custom_ksid_col')
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/80-', 'replica'],
auto_log=True)
# After a forwards migration, queryservice should be disabled on
# source and enabled on destinations
utils.check_tablet_query_service(self, shard_1_slave2, False, True)
# Destination tablets would have query service disabled for other
# reasons than the migration, so check the shard record instead of
# the tablets directly
utils.check_shard_query_services(self, destination_shards,
topodata_pb2.REPLICA, True)
utils.check_srv_keyspace('test_nj',
'test_keyspace',
'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-c0 c0-\n'
'Partitions(replica): -80 80-c0 c0-\n',
keyspace_id_type=keyspace_id_type,
sharding_column_name='custom_ksid_col')
# use vtworker to compare the data again
logging.debug('Running vtworker SplitDiff')
utils.run_vtworker([
'-cell', 'test_nj', 'SplitDiff', '--exclude_tables', 'unrelated',
'--min_healthy_rdonly_tablets', '1', 'test_keyspace/c0-'
],
auto_log=True)
utils.run_vtctl(
['ChangeSlaveType', shard_1_rdonly1.tablet_alias, 'rdonly'],
auto_log=True)
utils.run_vtctl(
['ChangeSlaveType', shard_3_rdonly1.tablet_alias, 'rdonly'],
auto_log=True)
# mock with the SourceShard records to test 'vtctl SourceShardDelete'
# and 'vtctl SourceShardAdd'
utils.run_vtctl(['SourceShardDelete', 'test_keyspace/c0-', '0'],
auto_log=True)
utils.run_vtctl([
'SourceShardAdd', '--key_range=80-', 'test_keyspace/c0-', '0',
'test_keyspace/80-'
],
auto_log=True)
# then serve master from the split shards, make sure the source master's
# query service is now turned off
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/80-', 'master'],
auto_log=True)
utils.check_srv_keyspace('test_nj',
'test_keyspace',
'Partitions(master): -80 80-c0 c0-\n'
'Partitions(rdonly): -80 80-c0 c0-\n'
'Partitions(replica): -80 80-c0 c0-\n',
keyspace_id_type=keyspace_id_type,
sharding_column_name='custom_ksid_col')
utils.check_tablet_query_service(self, shard_1_master, False, True)
# check the binlog players are gone now
self.check_no_binlog_player(shard_2_master)
self.check_no_binlog_player(shard_3_master)
# delete the original tablets in the original shard
tablet.kill_tablets([
shard_1_master, shard_1_slave1, shard_1_slave2, shard_1_ny_rdonly,
shard_1_rdonly1
])
for t in [
shard_1_slave1, shard_1_slave2, shard_1_ny_rdonly,
shard_1_rdonly1
]:
utils.run_vtctl(['DeleteTablet', t.tablet_alias], auto_log=True)
utils.run_vtctl(
['DeleteTablet', '-allow_master', shard_1_master.tablet_alias],
auto_log=True)
# rebuild the serving graph, all mentions of the old shards shoud be gone
utils.run_vtctl(['RebuildKeyspaceGraph', 'test_keyspace'],
auto_log=True)
# test RemoveShardCell
utils.run_vtctl(['RemoveShardCell', 'test_keyspace/-80', 'test_nj'],
auto_log=True,
expect_fail=True)
utils.run_vtctl(['RemoveShardCell', 'test_keyspace/80-', 'test_nj'],
auto_log=True)
utils.run_vtctl(['RemoveShardCell', 'test_keyspace/80-', 'test_ny'],
auto_log=True)
shard = utils.run_vtctl_json(['GetShard', 'test_keyspace/80-'])
self.assertNotIn('cells', shard)
# delete the original shard
utils.run_vtctl(['DeleteShard', 'test_keyspace/80-'], auto_log=True)
# kill everything
tablet.kill_tablets([
shard_0_master, shard_0_replica, shard_0_ny_rdonly, shard_2_master,
shard_2_replica1, shard_2_replica2, shard_3_master,
shard_3_replica, shard_3_rdonly1
])
def test_resharding(self):
# create the keyspace with just one shard
shard_master.init_tablet('replica',
keyspace='test_keyspace',
shard='0',
tablet_index=0)
shard_replica.init_tablet('replica',
keyspace='test_keyspace',
shard='0',
tablet_index=1)
shard_rdonly1.init_tablet('rdonly',
keyspace='test_keyspace',
shard='0',
tablet_index=2)
for t in [shard_master, shard_replica, shard_rdonly1]:
t.create_db('vt_test_keyspace')
# replica is not started, InitShardMaster should timeout
shard_master.start_vttablet(wait_for_state=None,
binlog_use_v3_resharding_mode=False)
shard_rdonly1.start_vttablet(wait_for_state=None,
binlog_use_v3_resharding_mode=False)
for t in [shard_master, shard_rdonly1]:
t.wait_for_vttablet_state('NOT_SERVING')
# reparent to make the tablets work - expect fail
# because replica tablet is not up
_, stderr = utils.run_vtctl([
'InitShardMaster', '-force', 'test_keyspace/0',
shard_master.tablet_alias
],
auto_log=True,
expect_fail=True)
self.assertIn('tablet test_nj-0000062345 ResetReplication failed',
stderr)
# start replica
shard_replica.start_vttablet(wait_for_state=None,
binlog_use_v3_resharding_mode=False)
shard_replica.wait_for_vttablet_state('NOT_SERVING')
# reparent to make the tablets work
utils.run_vtctl([
'InitShardMaster', '-force', 'test_keyspace/0',
shard_master.tablet_alias
],
auto_log=True)
utils.wait_for_tablet_type(shard_replica.tablet_alias, 'replica')
utils.wait_for_tablet_type(shard_rdonly1.tablet_alias, 'rdonly')
for t in [shard_master, shard_replica, shard_rdonly1]:
t.wait_for_vttablet_state('SERVING')
# create the tables and add startup values
self._create_schema()
self._insert_startup_values()
# reload schema on all tablets so we can query them
for t in [shard_master, shard_replica, shard_rdonly1]:
utils.run_vtctl(['ReloadSchema', t.tablet_alias], auto_log=True)
# We must start vtgate after tablets are up, or else wait until 1min refresh
# (that is the tablet_refresh_interval parameter for discovery gateway)
# we want cache_ttl at zero so we re-read the topology for every test query.
utils.VtGate().start(
cache_ttl='0',
tablets=[shard_master, shard_replica, shard_rdonly1])
utils.vtgate.wait_for_endpoints('test_keyspace.0.master', 1)
utils.vtgate.wait_for_endpoints('test_keyspace.0.replica', 1)
utils.vtgate.wait_for_endpoints('test_keyspace.0.rdonly', 1)
# check the Map Reduce API works correctly, should use ExecuteShards,
# as we're not sharded yet.
# we have 3 values in the database, asking for 4 splits will get us
# a single query.
sql = 'select id, msg from resharding1'
s = utils.vtgate.split_query(sql, 'test_keyspace', 4)
self.assertEqual(len(s), 1)
self.assertEqual(s[0]['shard_part']['shards'][0], '0')
# change the schema, backfill keyspace_id, and change schema again
self._add_sharding_key_to_schema()
self._backfill_keyspace_id(shard_master)
self._mark_sharding_key_not_null()
# now we can be a sharded keyspace (and propagate to SrvKeyspace)
utils.run_vtctl([
'SetKeyspaceShardingInfo', 'test_keyspace', 'custom_ksid_col',
base_sharding.keyspace_id_type
])
utils.run_vtctl(['RebuildKeyspaceGraph', 'test_keyspace'],
auto_log=True)
# run a health check on source replica so it responds to discovery
utils.run_vtctl(['RunHealthCheck', shard_replica.tablet_alias])
# create the split shards
shard_0_master.init_tablet('replica',
keyspace='test_keyspace',
shard='-80',
tablet_index=0)
shard_0_replica.init_tablet('replica',
keyspace='test_keyspace',
shard='-80',
tablet_index=1)
shard_0_rdonly1.init_tablet('rdonly',
keyspace='test_keyspace',
shard='-80',
tablet_index=2)
shard_1_master.init_tablet('replica',
keyspace='test_keyspace',
shard='80-',
tablet_index=0)
shard_1_replica.init_tablet('replica',
keyspace='test_keyspace',
shard='80-',
tablet_index=1)
shard_1_rdonly1.init_tablet('rdonly',
keyspace='test_keyspace',
shard='80-',
tablet_index=2)
for t in [
shard_0_master, shard_0_replica, shard_0_rdonly1,
shard_1_master, shard_1_replica, shard_1_rdonly1
]:
t.create_db('vt_test_keyspace')
t.start_vttablet(wait_for_state=None,
binlog_use_v3_resharding_mode=False)
for t in [
shard_0_master, shard_0_replica, shard_0_rdonly1,
shard_1_master, shard_1_replica, shard_1_rdonly1
]:
t.wait_for_vttablet_state('NOT_SERVING')
utils.run_vtctl([
'InitShardMaster', '-force', 'test_keyspace/-80',
shard_0_master.tablet_alias
],
auto_log=True)
utils.run_vtctl([
'InitShardMaster', '-force', 'test_keyspace/80-',
shard_1_master.tablet_alias
],
auto_log=True)
for t in [shard_0_replica, shard_1_replica]:
utils.wait_for_tablet_type(t.tablet_alias, 'replica')
for t in [shard_0_rdonly1, shard_1_rdonly1]:
utils.wait_for_tablet_type(t.tablet_alias, 'rdonly')
sharded_tablets = [
shard_0_master, shard_0_replica, shard_0_rdonly1, shard_1_master,
shard_1_replica, shard_1_rdonly1
]
for t in sharded_tablets:
t.wait_for_vttablet_state('SERVING')
# must restart vtgate after tablets are up, or else wait until 1min refresh
# we want cache_ttl at zero so we re-read the topology for every test query.
utils.vtgate.kill()
utils.vtgate = None
utils.VtGate().start(cache_ttl='0',
tablets=[
shard_master, shard_replica, shard_rdonly1,
shard_0_master, shard_0_replica,
shard_0_rdonly1, shard_1_master,
shard_1_replica, shard_1_rdonly1
])
var = None
# Wait for the endpoints, either local or remote.
utils.vtgate.wait_for_endpoints('test_keyspace.0.master', 1, var=var)
utils.vtgate.wait_for_endpoints('test_keyspace.0.replica', 1, var=var)
utils.vtgate.wait_for_endpoints('test_keyspace.0.rdonly', 1, var=var)
utils.vtgate.wait_for_endpoints('test_keyspace.-80.master', 1, var=var)
utils.vtgate.wait_for_endpoints('test_keyspace.-80.replica',
1,
var=var)
utils.vtgate.wait_for_endpoints('test_keyspace.-80.rdonly', 1, var=var)
utils.vtgate.wait_for_endpoints('test_keyspace.80-.master', 1, var=var)
utils.vtgate.wait_for_endpoints('test_keyspace.80-.replica',
1,
var=var)
utils.vtgate.wait_for_endpoints('test_keyspace.80-.rdonly', 1, var=var)
# check the Map Reduce API works correctly, should use ExecuteKeyRanges now,
# as we are sharded (with just one shard).
# again, we have 3 values in the database, asking for 4 splits will get us
# a single query.
sql = 'select id, msg from resharding1'
s = utils.vtgate.split_query(sql, 'test_keyspace', 4)
self.assertEqual(len(s), 1)
self.assertEqual(s[0]['key_range_part']['keyspace'], 'test_keyspace')
# There must be one empty KeyRange which represents the full keyspace.
self.assertEqual(len(s[0]['key_range_part']['key_ranges']), 1)
self.assertEqual(s[0]['key_range_part']['key_ranges'][0], {})
utils.check_srv_keyspace(
'test_nj',
'test_keyspace', 'Partitions(master): -\n'
'Partitions(rdonly): -\n'
'Partitions(replica): -\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
# we need to create the schema, and the worker will do data copying
for keyspace_shard in ('test_keyspace/-80', 'test_keyspace/80-'):
utils.run_vtctl([
'CopySchemaShard', '--exclude_tables', 'unrelated',
shard_rdonly1.tablet_alias, keyspace_shard
],
auto_log=True)
utils.run_vtctl(['RunHealthCheck', shard_rdonly1.tablet_alias])
# Run vtworker as daemon for the following SplitClone commands.
worker_proc, worker_port, worker_rpc_port = utils.run_vtworker_bg(
[
'--cell', 'test_nj', '--command_display_interval', '10ms',
'--use_v3_resharding_mode=false'
],
auto_log=True)
# Initial clone (online).
workerclient_proc = utils.run_vtworker_client_bg([
'SplitClone', '--offline=false', '--exclude_tables', 'unrelated',
'--chunk_count', '10', '--min_rows_per_chunk', '1',
'--min_healthy_rdonly_tablets', '1', 'test_keyspace/0'
], worker_rpc_port)
utils.wait_procs([workerclient_proc])
self.verify_reconciliation_counters(worker_port, 'Online',
'resharding1', 3, 0, 0, 0)
# Reset vtworker such that we can run the next command.
workerclient_proc = utils.run_vtworker_client_bg(['Reset'],
worker_rpc_port)
utils.wait_procs([workerclient_proc])
# Modify the destination shard. SplitClone will revert the changes.
# Delete row 1 (provokes an insert).
shard_0_master.mquery('vt_test_keyspace',
'delete from resharding1 where id=1',
write=True)
# Delete row 2 (provokes an insert).
shard_1_master.mquery('vt_test_keyspace',
'delete from resharding1 where id=2',
write=True)
# Update row 3 (provokes an update).
shard_1_master.mquery(
'vt_test_keyspace',
"update resharding1 set msg='msg-not-3' where id=3",
write=True)
# Insert row 4 (provokes a delete).
self._insert_value(shard_1_master, 'resharding1', 4, 'msg4',
0xD000000000000000)
workerclient_proc = utils.run_vtworker_client_bg([
'SplitClone', '--exclude_tables', 'unrelated', '--chunk_count',
'10', '--min_rows_per_chunk', '1', '--min_healthy_rdonly_tablets',
'1', 'test_keyspace/0'
], worker_rpc_port)
utils.wait_procs([workerclient_proc])
self.verify_reconciliation_counters(worker_port, 'Online',
'resharding1', 2, 1, 1, 0)
self.verify_reconciliation_counters(worker_port, 'Offline',
'resharding1', 0, 0, 0, 3)
# Terminate worker daemon because it is no longer needed.
utils.kill_sub_process(worker_proc, soft=True)
# check the startup values are in the right place
self._check_startup_values()
# check the schema too
utils.run_vtctl(['ValidateSchemaKeyspace', 'test_keyspace'],
auto_log=True)
# check the binlog players are running
logging.debug('Waiting for binlog players to start on new masters...')
self.check_destination_master(shard_0_master, ['test_keyspace/0'])
self.check_destination_master(shard_1_master, ['test_keyspace/0'])
# check that binlog server exported the stats vars
self.check_binlog_server_vars(shard_replica, horizontal=True)
# testing filtered replication: insert a bunch of data on shard 1,
# check we get most of it after a few seconds, wait for binlog server
# timeout, check we get all of it.
logging.debug('Inserting lots of data on source shard')
self._insert_lots(1000)
logging.debug('Checking 80 percent of data is sent quickly')
v = self._check_lots_timeout(1000, 80, 5)
if v != 100:
logging.debug('Checking all data goes through eventually')
self._check_lots_timeout(1000, 100, 20)
logging.debug('Checking no data was sent the wrong way')
self._check_lots_not_present(1000)
self.check_binlog_player_vars(shard_0_master, ['test_keyspace/0'],
seconds_behind_master_max=30)
self.check_binlog_player_vars(shard_1_master, ['test_keyspace/0'],
seconds_behind_master_max=30)
self.check_binlog_server_vars(shard_replica,
horizontal=True,
min_statements=1000,
min_transactions=1000)
# use vtworker to compare the data
for t in [shard_0_rdonly1, shard_1_rdonly1]:
utils.run_vtctl(['RunHealthCheck', t.tablet_alias])
if base_sharding.use_multi_split_diff:
logging.debug('Running vtworker MultiSplitDiff for 0')
utils.run_vtworker([
'-cell', 'test_nj', '--use_v3_resharding_mode=false',
'MultiSplitDiff', '--min_healthy_rdonly_tablets', '1',
'test_keyspace/0'
],
auto_log=True)
else:
logging.debug('Running vtworker SplitDiff for -80')
utils.run_vtworker([
'-cell', 'test_nj', '--use_v3_resharding_mode=false',
'SplitDiff', '--min_healthy_rdonly_tablets', '1',
'test_keyspace/-80'
],
auto_log=True)
logging.debug('Running vtworker SplitDiff for 80-')
utils.run_vtworker([
'-cell', 'test_nj', '--use_v3_resharding_mode=false',
'SplitDiff', '--min_healthy_rdonly_tablets', '1',
'test_keyspace/80-'
],
auto_log=True)
utils.pause('Good time to test vtworker for diffs')
# get status for the destination master tablet, make sure we have it all
self.check_running_binlog_player(shard_0_master, 2000, 2000)
self.check_running_binlog_player(shard_1_master, 6000, 2000)
# check we can't migrate the master just yet
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/0', 'master'],
expect_fail=True)
# now serve rdonly from the split shards
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/0', 'rdonly'],
auto_log=True)
utils.check_srv_keyspace(
'test_nj',
'test_keyspace', 'Partitions(master): -\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
# make sure rdonly tablets are back to serving before hitting vtgate.
for t in [shard_0_rdonly1, shard_1_rdonly1]:
t.wait_for_vttablet_state('SERVING')
utils.vtgate.wait_for_endpoints('test_keyspace.-80.rdonly', 1)
utils.vtgate.wait_for_endpoints('test_keyspace.80-.rdonly', 1)
# check the Map Reduce API works correctly, should use ExecuteKeyRanges
# on both destination shards now.
# we ask for 2 splits to only have one per shard
sql = 'select id, msg from resharding1'
timeout = 10.0
while True:
try:
s = utils.vtgate.split_query(sql, 'test_keyspace', 2)
break
except Exception: # pylint: disable=broad-except
timeout = utils.wait_step(
'vtgate executes split_query properly', timeout)
self.assertEqual(len(s), 2)
self.assertEqual(s[0]['key_range_part']['keyspace'], 'test_keyspace')
self.assertEqual(s[1]['key_range_part']['keyspace'], 'test_keyspace')
self.assertEqual(len(s[0]['key_range_part']['key_ranges']), 1)
self.assertEqual(len(s[1]['key_range_part']['key_ranges']), 1)
# then serve replica from the split shards
source_tablet = shard_replica
destination_tablets = [shard_0_replica, shard_1_replica]
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/0', 'replica'],
auto_log=True)
utils.check_srv_keyspace(
'test_nj',
'test_keyspace', 'Partitions(master): -\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
# move replica back and forth
utils.run_vtctl(
['MigrateServedTypes', '-reverse', 'test_keyspace/0', 'replica'],
auto_log=True)
# After a backwards migration, queryservice should be enabled on
# source and disabled on destinations
utils.check_tablet_query_service(self, source_tablet, True, False)
utils.check_tablet_query_services(self, destination_tablets, False,
True)
utils.check_srv_keyspace(
'test_nj',
'test_keyspace', 'Partitions(master): -\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/0', 'replica'],
auto_log=True)
# After a forwards migration, queryservice should be disabled on
# source and enabled on destinations
utils.check_tablet_query_service(self, source_tablet, False, True)
utils.check_tablet_query_services(self, destination_tablets, True,
False)
utils.check_srv_keyspace(
'test_nj',
'test_keyspace', 'Partitions(master): -\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
# then serve master from the split shards
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/0', 'master'],
auto_log=True)
utils.check_srv_keyspace(
'test_nj',
'test_keyspace', 'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
# check the binlog players are gone now
self.check_no_binlog_player(shard_0_master)
self.check_no_binlog_player(shard_1_master)
# make sure we can't delete a shard with tablets
utils.run_vtctl(['DeleteShard', 'test_keyspace/0'], expect_fail=True)
# remove the original tablets in the original shard
tablet.kill_tablets([shard_master, shard_replica, shard_rdonly1])
for t in [shard_replica, shard_rdonly1]:
utils.run_vtctl(['DeleteTablet', t.tablet_alias], auto_log=True)
utils.run_vtctl(
['DeleteTablet', '-allow_master', shard_master.tablet_alias],
auto_log=True)
# rebuild the serving graph, all mentions of the old shards should be gone
utils.run_vtctl(['RebuildKeyspaceGraph', 'test_keyspace'],
auto_log=True)
# delete the original shard
utils.run_vtctl(['DeleteShard', 'test_keyspace/0'], auto_log=True)
# kill everything else
tablet.kill_tablets([
shard_0_master, shard_0_replica, shard_0_rdonly1, shard_1_master,
shard_1_replica, shard_1_rdonly1
])
def verify(self):
self.assert_shard_data_equal(0, worker.shard_master,
worker.shard_0_tablets.replica)
self.assert_shard_data_equal(1, worker.shard_master,
worker.shard_1_tablets.replica)
# Verify effect of MigrateServedTypes. Dest shards are serving now.
utils.check_srv_keyspace(
'test_nj', self.KEYSPACE, 'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -80 80-\n')
# Check that query service is disabled (source shard) or enabled (dest).
# The 'rdonly' tablet requires an explicit healthcheck first because
# the following sequence of events is happening in this test:
# - SplitDiff returns 'rdonly' as 'spare' tablet (NOT_SERVING)
# - MigrateServedTypes runs and does not refresh then 'spare' tablet
# (still NOT_SERVING)
# Shard_TabletControl.DisableQueryService=true will be set in the topology
# - explicit or periodic healthcheck runs:
# a) tablet seen as caught up, change type from 'spare' to 'rdonly'
# (change to SERVING)
# b) post-action callback agent.refreshTablet() reads the topology
# and finds out that DisableQueryService=true is set.
# (change to NOT_SERVING)
#
# We must run an explicit healthcheck or we can see one of the two states:
# - NOT_SERVING, DisableQueryService=false, tablet type 'spare'
# (immediately after SplitDiff returned)
# - SERVING, DisableQueryService=false, tablet type 'rdonly'
# (during healthcheck before post-action callback is called)
utils.run_vtctl(['RunHealthCheck', worker.shard_rdonly1.tablet_alias],
auto_log=True)
# source shard: query service must be disabled after MigrateServedTypes.
utils.check_tablet_query_service(self,
worker.shard_rdonly1,
serving=False,
tablet_control_disabled=True)
utils.check_tablet_query_service(self,
worker.shard_replica,
serving=False,
tablet_control_disabled=True)
utils.check_tablet_query_service(self,
worker.shard_master,
serving=False,
tablet_control_disabled=True)
# dest shard -80: query service must be disabled after MigrateServedTypes.
# Run explicit healthcheck because 'rdonly' tablet may still be 'spare'.
utils.run_vtctl(
['RunHealthCheck', worker.shard_0_rdonly1.tablet_alias],
auto_log=True)
utils.check_tablet_query_service(self,
worker.shard_0_rdonly1,
serving=True,
tablet_control_disabled=False)
utils.check_tablet_query_service(self,
worker.shard_0_replica,
serving=True,
tablet_control_disabled=False)
utils.check_tablet_query_service(self,
worker.shard_0_master,
serving=True,
tablet_control_disabled=False)
# dest shard 80-: query service must be disabled after MigrateServedTypes.
# Run explicit healthcheck because 'rdonly' tablet is still 'spare'.
utils.run_vtctl(
['RunHealthCheck', worker.shard_1_rdonly1.tablet_alias],
auto_log=True)
utils.check_tablet_query_service(self,
worker.shard_1_rdonly1,
serving=True,
tablet_control_disabled=False)
utils.check_tablet_query_service(self,
worker.shard_1_replica,
serving=True,
tablet_control_disabled=False)
utils.check_tablet_query_service(self,
worker.shard_1_master,
serving=True,
tablet_control_disabled=False)
def test_resharding(self):
# we're going to reparent and swap these two
global shard_2_master, shard_2_replica1
utils.run_vtctl([
'CreateKeyspace', '--sharding_column_name', 'bad_column',
'--sharding_column_type', 'bytes', 'test_keyspace'
])
utils.run_vtctl([
'SetKeyspaceShardingInfo', 'test_keyspace', 'custom_ksid_col',
'uint64'
],
expect_fail=True)
utils.run_vtctl([
'SetKeyspaceShardingInfo', '-force', 'test_keyspace',
'custom_ksid_col', base_sharding.keyspace_id_type
])
shard_0_master.init_tablet('master', 'test_keyspace', '-80')
shard_0_replica.init_tablet('replica', 'test_keyspace', '-80')
shard_0_ny_rdonly.init_tablet('rdonly', 'test_keyspace', '-80')
shard_1_master.init_tablet('master', 'test_keyspace', '80-')
shard_1_slave1.init_tablet('replica', 'test_keyspace', '80-')
shard_1_slave2.init_tablet('replica', 'test_keyspace', '80-')
shard_1_ny_rdonly.init_tablet('rdonly', 'test_keyspace', '80-')
shard_1_rdonly1.init_tablet('rdonly', 'test_keyspace', '80-')
utils.run_vtctl(['RebuildKeyspaceGraph', 'test_keyspace'],
auto_log=True)
ks = utils.run_vtctl_json(
['GetSrvKeyspace', 'test_nj', 'test_keyspace'])
self.assertEqual(ks['sharding_column_name'], 'custom_ksid_col')
# we set full_mycnf_args to True as a test in the KIT_BYTES case
full_mycnf_args = (
base_sharding.keyspace_id_type == keyrange_constants.KIT_BYTES)
# create databases so vttablet can start behaving somewhat normally
for t in [
shard_0_master, shard_0_replica, shard_0_ny_rdonly,
shard_1_master, shard_1_slave1, shard_1_slave2,
shard_1_ny_rdonly, shard_1_rdonly1
]:
t.create_db('vt_test_keyspace')
t.start_vttablet(wait_for_state=None,
full_mycnf_args=full_mycnf_args)
# wait for the tablets (replication is not setup, the slaves won't be
# healthy)
shard_0_master.wait_for_vttablet_state('SERVING')
shard_0_replica.wait_for_vttablet_state('NOT_SERVING')
shard_0_ny_rdonly.wait_for_vttablet_state('NOT_SERVING')
shard_1_master.wait_for_vttablet_state('SERVING')
shard_1_slave1.wait_for_vttablet_state('NOT_SERVING')
shard_1_slave2.wait_for_vttablet_state('NOT_SERVING')
shard_1_ny_rdonly.wait_for_vttablet_state('NOT_SERVING')
shard_1_rdonly1.wait_for_vttablet_state('NOT_SERVING')
# reparent to make the tablets work
utils.run_vtctl([
'InitShardMaster', 'test_keyspace/-80', shard_0_master.tablet_alias
],
auto_log=True)
utils.run_vtctl([
'InitShardMaster', 'test_keyspace/80-', shard_1_master.tablet_alias
],
auto_log=True)
# check the shards
shards = utils.run_vtctl_json(
['FindAllShardsInKeyspace', 'test_keyspace'])
self.assertIn('-80', shards, 'unexpected shards: %s' % str(shards))
self.assertIn('80-', shards, 'unexpected shards: %s' % str(shards))
self.assertEqual(len(shards), 2, 'unexpected shards: %s' % str(shards))
# create the tables
self._create_schema()
self._insert_startup_values()
self._test_keyrange_constraints()
# run a health check on source replicas so they respond to discovery
# (for binlog players) and on the source rdonlys (for workers)
for t in [shard_0_replica, shard_1_slave1]:
utils.run_vtctl(['RunHealthCheck', t.tablet_alias])
for t in [shard_0_ny_rdonly, shard_1_ny_rdonly, shard_1_rdonly1]:
utils.run_vtctl(['RunHealthCheck', t.tablet_alias])
# create the split shards
shard_2_master.init_tablet('master', 'test_keyspace', '80-c0')
shard_2_replica1.init_tablet('replica', 'test_keyspace', '80-c0')
shard_2_replica2.init_tablet('replica', 'test_keyspace', '80-c0')
shard_2_rdonly1.init_tablet('rdonly', 'test_keyspace', '80-c0')
shard_3_master.init_tablet('master', 'test_keyspace', 'c0-')
shard_3_replica.init_tablet('replica', 'test_keyspace', 'c0-')
shard_3_rdonly1.init_tablet('rdonly', 'test_keyspace', 'c0-')
# start vttablet on the split shards (no db created,
# so they're all not serving)
shard_2_master.start_vttablet(wait_for_state=None)
shard_3_master.start_vttablet(wait_for_state=None)
for t in [
shard_2_replica1, shard_2_replica2, shard_2_rdonly1,
shard_3_replica, shard_3_rdonly1
]:
t.start_vttablet(wait_for_state=None)
for t in [
shard_2_master, shard_2_replica1, shard_2_replica2,
shard_2_rdonly1, shard_3_master, shard_3_replica,
shard_3_rdonly1
]:
t.wait_for_vttablet_state('NOT_SERVING')
utils.run_vtctl([
'InitShardMaster', 'test_keyspace/80-c0',
shard_2_master.tablet_alias
],
auto_log=True)
utils.run_vtctl([
'InitShardMaster', 'test_keyspace/c0-', shard_3_master.tablet_alias
],
auto_log=True)
# check the shards
shards = utils.run_vtctl_json(
['FindAllShardsInKeyspace', 'test_keyspace'])
for s in ['-80', '80-', '80-c0', 'c0-']:
self.assertIn(s, shards, 'unexpected shards: %s' % str(shards))
self.assertEqual(len(shards), 4, 'unexpected shards: %s' % str(shards))
utils.run_vtctl(['RebuildKeyspaceGraph', 'test_keyspace'],
auto_log=True)
utils.check_srv_keyspace(
'test_nj',
'test_keyspace', 'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
# disable shard_1_slave2, so we're sure filtered replication will go
# from shard_1_slave1
utils.run_vtctl(
['ChangeSlaveType', shard_1_slave2.tablet_alias, 'spare'])
shard_1_slave2.wait_for_vttablet_state('NOT_SERVING')
# we need to create the schema, and the worker will do data copying
for keyspace_shard in ('test_keyspace/80-c0', 'test_keyspace/c0-'):
utils.run_vtctl([
'CopySchemaShard', '--exclude_tables', 'unrelated',
shard_1_rdonly1.tablet_alias, keyspace_shard
],
auto_log=True)
# Run vtworker as daemon for the following SplitClone commands.
worker_proc, worker_port, worker_rpc_port = utils.run_vtworker_bg(
['--cell', 'test_nj', '--command_display_interval', '10ms'],
auto_log=True)
# Copy the data from the source to the destination shards.
# --max_tps is only specified to enable the throttler and ensure that the
# code is executed. But the intent here is not to throttle the test, hence
# the rate limit is set very high.
#
# Initial clone (online).
workerclient_proc = utils.run_vtworker_client_bg([
'SplitClone', '--offline=false', '--exclude_tables', 'unrelated',
'--chunk_count', '10', '--min_rows_per_chunk', '1',
'--min_healthy_rdonly_tablets', '1', '--max_tps', '9999',
'test_keyspace/80-'
], worker_rpc_port)
utils.wait_procs([workerclient_proc])
self.verify_reconciliation_counters(worker_port, 'Online',
'resharding1', 2, 0, 0, 0)
# Reset vtworker such that we can run the next command.
workerclient_proc = utils.run_vtworker_client_bg(['Reset'],
worker_rpc_port)
utils.wait_procs([workerclient_proc])
# Test the correct handling of keyspace_id changes which happen after
# the first clone.
# Let row 2 go to shard 3 instead of shard 2.
shard_1_master.mquery('vt_test_keyspace', 'update resharding1 set'
' custom_ksid_col=0xD000000000000000 WHERE id=2',
write=True)
workerclient_proc = utils.run_vtworker_client_bg([
'SplitClone', '--offline=false', '--exclude_tables', 'unrelated',
'--chunk_count', '10', '--min_rows_per_chunk', '1',
'--min_healthy_rdonly_tablets', '1', '--max_tps', '9999',
'test_keyspace/80-'
], worker_rpc_port)
utils.wait_procs([workerclient_proc])
# Row 2 will be deleted from shard 2 and inserted to shard 3.
self.verify_reconciliation_counters(worker_port, 'Online',
'resharding1', 1, 0, 1, 1)
self._check_value(shard_2_master,
'resharding1',
2,
'msg2',
0xD000000000000000,
should_be_here=False)
self._check_value(shard_3_master, 'resharding1', 2, 'msg2',
0xD000000000000000)
# Reset vtworker such that we can run the next command.
workerclient_proc = utils.run_vtworker_client_bg(['Reset'],
worker_rpc_port)
utils.wait_procs([workerclient_proc])
# Move row 2 back to shard 2 from shard 3 by changing the keyspace_id again.
shard_1_master.mquery('vt_test_keyspace', 'update resharding1 set'
' custom_ksid_col=0x9000000000000000 WHERE id=2',
write=True)
workerclient_proc = utils.run_vtworker_client_bg([
'SplitClone', '--offline=false', '--exclude_tables', 'unrelated',
'--chunk_count', '10', '--min_rows_per_chunk', '1',
'--min_healthy_rdonly_tablets', '1', '--max_tps', '9999',
'test_keyspace/80-'
], worker_rpc_port)
utils.wait_procs([workerclient_proc])
# Row 2 will be deleted from shard 3 and inserted to shard 2.
self.verify_reconciliation_counters(worker_port, 'Online',
'resharding1', 1, 0, 1, 1)
self._check_value(shard_2_master, 'resharding1', 2, 'msg2',
0x9000000000000000)
self._check_value(shard_3_master,
'resharding1',
2,
'msg2',
0x9000000000000000,
should_be_here=False)
# Reset vtworker such that we can run the next command.
workerclient_proc = utils.run_vtworker_client_bg(['Reset'],
worker_rpc_port)
utils.wait_procs([workerclient_proc])
# Modify the destination shard. SplitClone will revert the changes.
# Delete row 2 (provokes an insert).
shard_2_master.mquery('vt_test_keyspace',
'delete from resharding1 where id=2',
write=True)
# Update row 3 (provokes an update).
shard_3_master.mquery(
'vt_test_keyspace',
"update resharding1 set msg='msg-not-3' where id=3",
write=True)
# Insert row 4 and 5 (provokes a delete).
self._insert_value(shard_3_master, 'resharding1', 4, 'msg4',
0xD000000000000000)
self._insert_value(shard_3_master, 'resharding1', 5, 'msg5',
0xD000000000000000)
workerclient_proc = utils.run_vtworker_client_bg([
'SplitClone', '--exclude_tables', 'unrelated', '--chunk_count',
'10', '--min_rows_per_chunk', '1', '--min_healthy_rdonly_tablets',
'1', '--max_tps', '9999', 'test_keyspace/80-'
], worker_rpc_port)
utils.wait_procs([workerclient_proc])
# Change tablet, which was taken offline, back to rdonly.
utils.run_vtctl(
['ChangeSlaveType', shard_1_rdonly1.tablet_alias, 'rdonly'],
auto_log=True)
self.verify_reconciliation_counters(worker_port, 'Online',
'resharding1', 1, 1, 2, 0)
self.verify_reconciliation_counters(worker_port, 'Offline',
'resharding1', 0, 0, 0, 2)
# Terminate worker daemon because it is no longer needed.
utils.kill_sub_process(worker_proc, soft=True)
# TODO(alainjobart): experiment with the dontStartBinlogPlayer option
# check the startup values are in the right place
self._check_startup_values()
# check the schema too
utils.run_vtctl([
'ValidateSchemaKeyspace', '--exclude_tables=unrelated',
'test_keyspace'
],
auto_log=True)
# check the binlog players are running and exporting vars
self.check_destination_master(shard_2_master, ['test_keyspace/80-'])
self.check_destination_master(shard_3_master, ['test_keyspace/80-'])
# check that binlog server exported the stats vars
self.check_binlog_server_vars(shard_1_slave1, horizontal=True)
# Check that the throttler was enabled.
self.check_throttler_service(shard_2_master.rpc_endpoint(),
['BinlogPlayer/0'], 9999)
self.check_throttler_service(shard_3_master.rpc_endpoint(),
['BinlogPlayer/0'], 9999)
# testing filtered replication: insert a bunch of data on shard 1,
# check we get most of it after a few seconds, wait for binlog server
# timeout, check we get all of it.
logging.debug('Inserting lots of data on source shard')
self._insert_lots(1000)
logging.debug('Checking 80 percent of data is sent quickly')
v = self._check_lots_timeout(1000, 80, 5)
if v != 100:
# small optimization: only do this check if we don't have all the data
# already anyway.
logging.debug('Checking all data goes through eventually')
self._check_lots_timeout(1000, 100, 20)
logging.debug('Checking no data was sent the wrong way')
self._check_lots_not_present(1000)
self.check_binlog_player_vars(shard_2_master, ['test_keyspace/80-'],
seconds_behind_master_max=30)
self.check_binlog_player_vars(shard_3_master, ['test_keyspace/80-'],
seconds_behind_master_max=30)
self.check_binlog_server_vars(shard_1_slave1,
horizontal=True,
min_statements=1000,
min_transactions=1000)
# use vtworker to compare the data (after health-checking the destination
# rdonly tablets so discovery works)
utils.run_vtctl(['RunHealthCheck', shard_3_rdonly1.tablet_alias])
logging.debug('Running vtworker SplitDiff')
utils.run_vtworker([
'-cell', 'test_nj', 'SplitDiff', '--exclude_tables', 'unrelated',
'--min_healthy_rdonly_tablets', '1', 'test_keyspace/c0-'
],
auto_log=True)
utils.run_vtctl(
['ChangeSlaveType', shard_1_rdonly1.tablet_alias, 'rdonly'],
auto_log=True)
utils.run_vtctl(
['ChangeSlaveType', shard_3_rdonly1.tablet_alias, 'rdonly'],
auto_log=True)
utils.pause('Good time to test vtworker for diffs')
# get status for destination master tablets, make sure we have it all
self.check_running_binlog_player(shard_2_master, 4000, 2000)
self.check_running_binlog_player(shard_3_master, 4000, 2000)
# start a thread to insert data into shard_1 in the background
# with current time, and monitor the delay
insert_thread_1 = InsertThread(shard_1_master, 'insert_low', 1, 10000,
0x9000000000000000)
insert_thread_2 = InsertThread(shard_1_master, 'insert_high', 2, 10001,
0xD000000000000000)
monitor_thread_1 = MonitorLagThread(shard_2_replica2, 'insert_low', 1)
monitor_thread_2 = MonitorLagThread(shard_3_replica, 'insert_high', 2)
# tests a failover switching serving to a different replica
utils.run_vtctl(
['ChangeSlaveType', shard_1_slave2.tablet_alias, 'replica'])
utils.run_vtctl(
['ChangeSlaveType', shard_1_slave1.tablet_alias, 'spare'])
shard_1_slave2.wait_for_vttablet_state('SERVING')
shard_1_slave1.wait_for_vttablet_state('NOT_SERVING')
utils.run_vtctl(['RunHealthCheck', shard_1_slave2.tablet_alias])
# test data goes through again
logging.debug('Inserting lots of data on source shard')
self._insert_lots(1000, base=1000)
logging.debug('Checking 80 percent of data was sent quickly')
self._check_lots_timeout(1000, 80, 5, base=1000)
self.check_binlog_server_vars(shard_1_slave2,
horizontal=True,
min_statements=800,
min_transactions=800)
# check we can't migrate the master just yet
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/80-', 'master'],
expect_fail=True)
# check query service is off on master 2 and master 3, as filtered
# replication is enabled. Even health check that is enabled on
# master 3 should not interfere (we run it to be sure).
utils.run_vtctl(['RunHealthCheck', shard_3_master.tablet_alias],
auto_log=True)
for master in [shard_2_master, shard_3_master]:
utils.check_tablet_query_service(self, master, False, False)
stream_health = utils.run_vtctl_json(
['VtTabletStreamHealth', '-count', '1', master.tablet_alias])
logging.debug('Got health: %s', str(stream_health))
self.assertIn('realtime_stats', stream_health)
self.assertNotIn('serving', stream_health)
# check the destination master 3 is healthy, even though its query
# service is not running (if not healthy this would exception out)
shard_3_master.get_healthz()
# now serve rdonly from the split shards, in test_nj only
utils.run_vtctl([
'MigrateServedTypes', '--cells=test_nj', 'test_keyspace/80-',
'rdonly'
],
auto_log=True)
utils.check_srv_keyspace(
'test_nj',
'test_keyspace', 'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-c0 c0-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
utils.check_srv_keyspace(
'test_ny',
'test_keyspace', 'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
utils.check_tablet_query_service(self, shard_0_ny_rdonly, True, False)
utils.check_tablet_query_service(self, shard_1_ny_rdonly, True, False)
utils.check_tablet_query_service(self, shard_1_rdonly1, False, True)
# now serve rdonly from the split shards, everywhere
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/80-', 'rdonly'],
auto_log=True)
utils.check_srv_keyspace(
'test_nj',
'test_keyspace', 'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-c0 c0-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
utils.check_srv_keyspace(
'test_ny',
'test_keyspace', 'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-c0 c0-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
utils.check_tablet_query_service(self, shard_0_ny_rdonly, True, False)
utils.check_tablet_query_service(self, shard_1_ny_rdonly, False, True)
utils.check_tablet_query_service(self, shard_1_rdonly1, False, True)
# then serve replica from the split shards
destination_shards = ['test_keyspace/80-c0', 'test_keyspace/c0-']
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/80-', 'replica'],
auto_log=True)
utils.check_srv_keyspace(
'test_nj',
'test_keyspace', 'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-c0 c0-\n'
'Partitions(replica): -80 80-c0 c0-\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
utils.check_tablet_query_service(self, shard_1_slave2, False, True)
# move replica back and forth
utils.run_vtctl(
['MigrateServedTypes', '-reverse', 'test_keyspace/80-', 'replica'],
auto_log=True)
# After a backwards migration, queryservice should be enabled on
# source and disabled on destinations
utils.check_tablet_query_service(self, shard_1_slave2, True, False)
# Destination tablets would have query service disabled for other
# reasons than the migration, so check the shard record instead of
# the tablets directly.
utils.check_shard_query_services(self, destination_shards,
topodata_pb2.REPLICA, False)
utils.check_srv_keyspace(
'test_nj',
'test_keyspace', 'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-c0 c0-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/80-', 'replica'],
auto_log=True)
# After a forwards migration, queryservice should be disabled on
# source and enabled on destinations
utils.check_tablet_query_service(self, shard_1_slave2, False, True)
# Destination tablets would have query service disabled for other
# reasons than the migration, so check the shard record instead of
# the tablets directly
utils.check_shard_query_services(self, destination_shards,
topodata_pb2.REPLICA, True)
utils.check_srv_keyspace(
'test_nj',
'test_keyspace', 'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-c0 c0-\n'
'Partitions(replica): -80 80-c0 c0-\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
# reparent shard_2 to shard_2_replica1, then insert more data and
# see it flow through still
utils.run_vtctl([
'PlannedReparentShard', 'test_keyspace/80-c0',
shard_2_replica1.tablet_alias
])
# update our test variables to point at the new master
shard_2_master, shard_2_replica1 = shard_2_replica1, shard_2_master
logging.debug(
'Inserting lots of data on source shard after reparenting')
self._insert_lots(3000, base=2000)
logging.debug('Checking 80 percent of data was sent fairly quickly')
self._check_lots_timeout(3000, 80, 10, base=2000)
# use vtworker to compare the data again
logging.debug('Running vtworker SplitDiff')
utils.run_vtworker([
'-cell', 'test_nj', 'SplitDiff', '--exclude_tables', 'unrelated',
'--min_healthy_rdonly_tablets', '1', 'test_keyspace/c0-'
],
auto_log=True)
utils.run_vtctl(
['ChangeSlaveType', shard_1_rdonly1.tablet_alias, 'rdonly'],
auto_log=True)
utils.run_vtctl(
['ChangeSlaveType', shard_3_rdonly1.tablet_alias, 'rdonly'],
auto_log=True)
# going to migrate the master now, check the delays
monitor_thread_1.done = True
monitor_thread_2.done = True
insert_thread_1.done = True
insert_thread_2.done = True
logging.debug(
'DELAY 1: %s max_lag=%d ms avg_lag=%d ms',
monitor_thread_1.thread_name, monitor_thread_1.max_lag_ms,
monitor_thread_1.lag_sum_ms / monitor_thread_1.sample_count)
logging.debug(
'DELAY 2: %s max_lag=%d ms avg_lag=%d ms',
monitor_thread_2.thread_name, monitor_thread_2.max_lag_ms,
monitor_thread_2.lag_sum_ms / monitor_thread_2.sample_count)
# mock with the SourceShard records to test 'vtctl SourceShardDelete'
# and 'vtctl SourceShardAdd'
utils.run_vtctl(['SourceShardDelete', 'test_keyspace/c0-', '0'],
auto_log=True)
utils.run_vtctl([
'SourceShardAdd', '--key_range=80-', 'test_keyspace/c0-', '0',
'test_keyspace/80-'
],
auto_log=True)
# then serve master from the split shards, make sure the source master's
# query service is now turned off
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/80-', 'master'],
auto_log=True)
utils.check_srv_keyspace(
'test_nj',
'test_keyspace', 'Partitions(master): -80 80-c0 c0-\n'
'Partitions(rdonly): -80 80-c0 c0-\n'
'Partitions(replica): -80 80-c0 c0-\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
utils.check_tablet_query_service(self, shard_1_master, False, True)
# check the binlog players are gone now
self.check_no_binlog_player(shard_2_master)
self.check_no_binlog_player(shard_3_master)
# delete the original tablets in the original shard
tablet.kill_tablets([
shard_1_master, shard_1_slave1, shard_1_slave2, shard_1_ny_rdonly,
shard_1_rdonly1
])
for t in [
shard_1_slave1, shard_1_slave2, shard_1_ny_rdonly,
shard_1_rdonly1
]:
utils.run_vtctl(['DeleteTablet', t.tablet_alias], auto_log=True)
utils.run_vtctl(
['DeleteTablet', '-allow_master', shard_1_master.tablet_alias],
auto_log=True)
# rebuild the serving graph, all mentions of the old shards shoud be gone
utils.run_vtctl(['RebuildKeyspaceGraph', 'test_keyspace'],
auto_log=True)
# test RemoveShardCell
utils.run_vtctl(['RemoveShardCell', 'test_keyspace/-80', 'test_nj'],
auto_log=True,
expect_fail=True)
utils.run_vtctl(['RemoveShardCell', 'test_keyspace/80-', 'test_nj'],
auto_log=True)
utils.run_vtctl(['RemoveShardCell', 'test_keyspace/80-', 'test_ny'],
auto_log=True)
shard = utils.run_vtctl_json(['GetShard', 'test_keyspace/80-'])
self.assertNotIn('cells', shard)
# delete the original shard
utils.run_vtctl(['DeleteShard', 'test_keyspace/80-'], auto_log=True)
# kill everything
tablet.kill_tablets([
shard_0_master, shard_0_replica, shard_0_ny_rdonly, shard_2_master,
shard_2_replica1, shard_2_replica2, shard_2_rdonly1,
shard_3_master, shard_3_replica, shard_3_rdonly1
])
def test_merge_sharding(self):
utils.run_vtctl(['CreateKeyspace',
'--sharding_column_name', 'custom_ksid_col',
'--sharding_column_type', base_sharding.keyspace_id_type,
'test_keyspace'])
shard_0_master.init_tablet('replica', 'test_keyspace', '-40')
shard_0_replica.init_tablet('replica', 'test_keyspace', '-40')
shard_0_rdonly.init_tablet('rdonly', 'test_keyspace', '-40')
shard_1_master.init_tablet('replica', 'test_keyspace', '40-80')
shard_1_replica.init_tablet('replica', 'test_keyspace', '40-80')
shard_1_rdonly.init_tablet('rdonly', 'test_keyspace', '40-80')
shard_2_master.init_tablet('replica', 'test_keyspace', '80-')
shard_2_replica.init_tablet('replica', 'test_keyspace', '80-')
shard_2_rdonly.init_tablet('rdonly', 'test_keyspace', '80-')
# rebuild and check SrvKeyspace
utils.run_vtctl(['RebuildKeyspaceGraph', 'test_keyspace'], auto_log=True)
ks = utils.run_vtctl_json(['GetSrvKeyspace', 'test_nj', 'test_keyspace'])
self.assertEqual(ks['sharding_column_name'], 'custom_ksid_col')
# create databases so vttablet can start behaving normally
for t in [shard_0_master, shard_0_replica, shard_0_rdonly,
shard_1_master, shard_1_replica, shard_1_rdonly,
shard_2_master, shard_2_replica, shard_2_rdonly]:
t.create_db('vt_test_keyspace')
t.start_vttablet(wait_for_state=None,
binlog_use_v3_resharding_mode=False)
# won't be serving, no replication state
for t in [shard_0_master, shard_0_replica, shard_0_rdonly,
shard_1_master, shard_1_replica, shard_1_rdonly,
shard_2_master, shard_2_replica, shard_2_rdonly]:
t.wait_for_vttablet_state('NOT_SERVING')
# reparent to make the tablets work
utils.run_vtctl(['InitShardMaster', '-force', 'test_keyspace/-40',
shard_0_master.tablet_alias], auto_log=True)
utils.run_vtctl(['InitShardMaster', '-force', 'test_keyspace/40-80',
shard_1_master.tablet_alias], auto_log=True)
utils.run_vtctl(['InitShardMaster', '-force', 'test_keyspace/80-',
shard_2_master.tablet_alias], auto_log=True)
# create the tables
self._create_schema()
self._insert_startup_values()
# run a health check on source replicas so they respond to discovery
# (for binlog players) and on the source rdonlys (for workers)
for t in [shard_0_replica, shard_1_replica]:
utils.run_vtctl(['RunHealthCheck', t.tablet_alias])
for t in [shard_0_rdonly, shard_1_rdonly]:
utils.run_vtctl(['RunHealthCheck', t.tablet_alias])
# create the merge shards
shard_dest_master.init_tablet('replica', 'test_keyspace', '-80')
shard_dest_replica.init_tablet('replica', 'test_keyspace', '-80')
shard_dest_rdonly.init_tablet('rdonly', 'test_keyspace', '-80')
# start vttablet on the destination shard (no db created,
# so they're all not serving)
for t in [shard_dest_master, shard_dest_replica, shard_dest_rdonly]:
t.start_vttablet(wait_for_state=None,
binlog_use_v3_resharding_mode=False)
for t in [shard_dest_master, shard_dest_replica, shard_dest_rdonly]:
t.wait_for_vttablet_state('NOT_SERVING')
utils.run_vtctl(['InitShardMaster', '-force', 'test_keyspace/-80',
shard_dest_master.tablet_alias], auto_log=True)
utils.run_vtctl(['RebuildKeyspaceGraph', 'test_keyspace'],
auto_log=True)
utils.check_srv_keyspace(
'test_nj', 'test_keyspace',
'Partitions(master): -40 40-80 80-\n'
'Partitions(rdonly): -40 40-80 80-\n'
'Partitions(replica): -40 40-80 80-\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
# copy the schema
utils.run_vtctl(['CopySchemaShard', shard_0_rdonly.tablet_alias,
'test_keyspace/-80'], auto_log=True)
# copy the data (will also start filtered replication), reset source
# Run vtworker as daemon for the following SplitClone commands.
worker_proc, worker_port, worker_rpc_port = utils.run_vtworker_bg(
['--cell', 'test_nj', '--command_display_interval', '10ms',
'--use_v3_resharding_mode=false'],
auto_log=True)
# Initial clone (online).
workerclient_proc = utils.run_vtworker_client_bg(
['SplitClone',
'--offline=false',
'--chunk_count', '10',
'--min_rows_per_chunk', '1',
'--min_healthy_rdonly_tablets', '1',
'test_keyspace/-80'],
worker_rpc_port)
utils.wait_procs([workerclient_proc])
self.verify_reconciliation_counters(worker_port, 'Online', 'resharding1',
2, 0, 0, 0)
# Reset vtworker such that we can run the next command.
workerclient_proc = utils.run_vtworker_client_bg(['Reset'], worker_rpc_port)
utils.wait_procs([workerclient_proc])
# Modify the destination shard. SplitClone will revert the changes.
# Delete row 1 (provokes an insert).
shard_dest_master.mquery('vt_test_keyspace',
'delete from resharding1 where id=1', write=True)
# Update row 2 (provokes an update).
shard_dest_master.mquery(
'vt_test_keyspace', "update resharding1 set msg='msg-not-2' where id=2",
write=True)
# Insert row 0 (provokes a delete).
self._insert_value(shard_dest_master, 'resharding1', 0, 'msg0',
0x5000000000000000)
workerclient_proc = utils.run_vtworker_client_bg(
['SplitClone',
'--chunk_count', '10',
'--min_rows_per_chunk', '1',
'--min_healthy_rdonly_tablets', '1',
'test_keyspace/-80'],
worker_rpc_port)
utils.wait_procs([workerclient_proc])
# Change tablets, which were taken offline, back to rdonly.
utils.run_vtctl(['ChangeSlaveType', shard_0_rdonly.tablet_alias,
'rdonly'], auto_log=True)
utils.run_vtctl(['ChangeSlaveType', shard_1_rdonly.tablet_alias,
'rdonly'], auto_log=True)
self.verify_reconciliation_counters(worker_port, 'Online', 'resharding1',
1, 1, 1, 0)
self.verify_reconciliation_counters(worker_port, 'Offline', 'resharding1',
0, 0, 0, 2)
# Terminate worker daemon because it is no longer needed.
utils.kill_sub_process(worker_proc, soft=True)
# check the startup values are in the right place
self._check_startup_values()
# check the schema too
utils.run_vtctl(['ValidateSchemaKeyspace', 'test_keyspace'], auto_log=True)
# check binlog player variables
self.check_destination_master(shard_dest_master,
['test_keyspace/-40', 'test_keyspace/40-80'])
# check that binlog server exported the stats vars
self.check_binlog_server_vars(shard_0_replica, horizontal=True)
self.check_binlog_server_vars(shard_1_replica, horizontal=True)
# testing filtered replication: insert a bunch of data on shard 0 and 1,
# check we get most of it after a few seconds, wait for binlog server
# timeout, check we get all of it.
logging.debug('Inserting lots of data on source shards')
self._insert_lots(1000)
logging.debug('Checking 80 percent of data is sent quickly')
v = self._check_lots_timeout(1000, 80, 10)
if v != 100:
# small optimization: only do this check if we don't have all the data
# already anyway.
logging.debug('Checking all data goes through eventually')
self._check_lots_timeout(1000, 100, 30)
self.check_binlog_player_vars(shard_dest_master,
['test_keyspace/-40', 'test_keyspace/40-80'],
seconds_behind_master_max=30)
self.check_binlog_server_vars(shard_0_replica, horizontal=True,
min_statements=1000, min_transactions=1000)
self.check_binlog_server_vars(shard_1_replica, horizontal=True,
min_statements=1000, min_transactions=1000)
# use vtworker to compare the data (after health-checking the destination
# rdonly tablets so discovery works)
utils.run_vtctl(['RunHealthCheck', shard_dest_rdonly.tablet_alias])
logging.debug('Running vtworker SplitDiff on first half')
utils.run_vtworker(['-cell', 'test_nj',
'--use_v3_resharding_mode=false',
'SplitDiff',
'--exclude_tables', 'unrelated',
'--min_healthy_rdonly_tablets', '1',
'--source_uid', '1',
'test_keyspace/-80'],
auto_log=True)
utils.run_vtctl(['ChangeSlaveType', shard_0_rdonly.tablet_alias, 'rdonly'],
auto_log=True)
utils.run_vtctl(['ChangeSlaveType', shard_dest_rdonly.tablet_alias,
'rdonly'], auto_log=True)
logging.debug('Running vtworker SplitDiff on second half')
utils.run_vtworker(['-cell', 'test_nj',
'--use_v3_resharding_mode=false',
'SplitDiff',
'--exclude_tables', 'unrelated',
'--min_healthy_rdonly_tablets', '1',
'--source_uid', '2',
'test_keyspace/-80'],
auto_log=True)
utils.run_vtctl(['ChangeSlaveType', shard_1_rdonly.tablet_alias, 'rdonly'],
auto_log=True)
utils.run_vtctl(['ChangeSlaveType', shard_dest_rdonly.tablet_alias,
'rdonly'], auto_log=True)
# get status for the destination master tablet, make sure we have it all
self.check_running_binlog_player(shard_dest_master, 3000, 1000)
# check destination master query service is not running
utils.check_tablet_query_service(self, shard_dest_master, False, False)
stream_health = utils.run_vtctl_json(['VtTabletStreamHealth',
'-count', '1',
shard_dest_master.tablet_alias])
logging.debug('Got health: %s', str(stream_health))
self.assertIn('realtime_stats', stream_health)
self.assertNotIn('serving', stream_health)
# check the destination master 3 is healthy, even though its query
# service is not running (if not healthy this would exception out)
shard_dest_master.get_healthz()
# now serve rdonly from the split shards
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/-80', 'rdonly'],
auto_log=True)
utils.check_srv_keyspace('test_nj', 'test_keyspace',
'Partitions(master): -40 40-80 80-\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -40 40-80 80-\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
# now serve replica from the split shards
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/-80', 'replica'],
auto_log=True)
utils.check_srv_keyspace('test_nj', 'test_keyspace',
'Partitions(master): -40 40-80 80-\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
# now serve master from the split shards
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/-80', 'master'],
auto_log=True)
utils.check_srv_keyspace('test_nj', 'test_keyspace',
'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
utils.check_tablet_query_service(self, shard_0_master, False, True)
utils.check_tablet_query_service(self, shard_1_master, False, True)
# check the binlog players are gone now
self.check_no_binlog_player(shard_dest_master)
# kill the original tablets in the original shards
tablet.kill_tablets([shard_0_master, shard_0_replica, shard_0_rdonly,
shard_1_master, shard_1_replica, shard_1_rdonly])
for t in [shard_0_replica, shard_0_rdonly,
shard_1_replica, shard_1_rdonly]:
utils.run_vtctl(['DeleteTablet', t.tablet_alias], auto_log=True)
for t in [shard_0_master, shard_1_master]:
utils.run_vtctl(['DeleteTablet', '-allow_master', t.tablet_alias],
auto_log=True)
# delete the original shards
utils.run_vtctl(['DeleteShard', 'test_keyspace/-40'], auto_log=True)
utils.run_vtctl(['DeleteShard', 'test_keyspace/40-80'], auto_log=True)
# rebuild the serving graph, all mentions of the old shards should be gone
utils.run_vtctl(['RebuildKeyspaceGraph', 'test_keyspace'], auto_log=True)
# kill everything else
tablet.kill_tablets([shard_2_master, shard_2_replica, shard_2_rdonly,
shard_dest_master, shard_dest_replica,
shard_dest_rdonly])
def test_merge_sharding(self):
utils.run_vtctl([
'CreateKeyspace', '--sharding_column_name', 'custom_sharding_key',
'--sharding_column_type', keyspace_id_type, 'test_keyspace'
])
shard_0_master.init_tablet('master', 'test_keyspace', '-40')
shard_0_replica.init_tablet('replica', 'test_keyspace', '-40')
shard_0_rdonly.init_tablet('rdonly', 'test_keyspace', '-40')
shard_1_master.init_tablet('master', 'test_keyspace', '40-80')
shard_1_replica.init_tablet('replica', 'test_keyspace', '40-80')
shard_1_rdonly.init_tablet('rdonly', 'test_keyspace', '40-80')
shard_2_master.init_tablet('master', 'test_keyspace', '80-')
shard_2_replica.init_tablet('replica', 'test_keyspace', '80-')
shard_2_rdonly.init_tablet('rdonly', 'test_keyspace', '80-')
# rebuild and check SrvKeyspace
utils.run_vtctl(['RebuildKeyspaceGraph', 'test_keyspace'],
auto_log=True)
ks = utils.run_vtctl_json(
['GetSrvKeyspace', 'test_nj', 'test_keyspace'])
self.assertEqual(ks['sharding_column_name'], 'custom_sharding_key')
# create databases so vttablet can start behaving normally
for t in [
shard_0_master, shard_0_replica, shard_0_rdonly,
shard_1_master, shard_1_replica, shard_1_rdonly,
shard_2_master, shard_2_replica, shard_2_rdonly
]:
t.create_db('vt_test_keyspace')
t.start_vttablet(wait_for_state=None)
# masters will be serving
for t in [shard_0_master, shard_1_master, shard_2_master]:
t.wait_for_vttablet_state('SERVING')
# slaves won't be, no replication state
for t in [
shard_0_replica, shard_0_rdonly, shard_1_replica,
shard_1_rdonly, shard_2_replica, shard_2_rdonly
]:
t.wait_for_vttablet_state('NOT_SERVING')
# reparent to make the tablets work
utils.run_vtctl([
'InitShardMaster', 'test_keyspace/-40', shard_0_master.tablet_alias
],
auto_log=True)
utils.run_vtctl([
'InitShardMaster', 'test_keyspace/40-80',
shard_1_master.tablet_alias
],
auto_log=True)
utils.run_vtctl([
'InitShardMaster', 'test_keyspace/80-', shard_2_master.tablet_alias
],
auto_log=True)
# create the tables
self._create_schema()
self._insert_startup_values()
# run a health check on source replicas so they respond to discovery
# (for binlog players) and on the source rdonlys (for workers)
for t in [shard_0_replica, shard_1_replica]:
utils.run_vtctl(['RunHealthCheck', t.tablet_alias])
for t in [shard_0_rdonly, shard_1_rdonly]:
utils.run_vtctl(['RunHealthCheck', t.tablet_alias])
# create the merge shards
shard_dest_master.init_tablet('master', 'test_keyspace', '-80')
shard_dest_replica.init_tablet('replica', 'test_keyspace', '-80')
shard_dest_rdonly.init_tablet('rdonly', 'test_keyspace', '-80')
# start vttablet on the destination shard (no db created,
# so they're all not serving)
for t in [shard_dest_master, shard_dest_replica, shard_dest_rdonly]:
t.start_vttablet(wait_for_state=None)
for t in [shard_dest_master, shard_dest_replica, shard_dest_rdonly]:
t.wait_for_vttablet_state('NOT_SERVING')
utils.run_vtctl([
'InitShardMaster', 'test_keyspace/-80',
shard_dest_master.tablet_alias
],
auto_log=True)
utils.run_vtctl(['RebuildKeyspaceGraph', 'test_keyspace'],
auto_log=True)
utils.check_srv_keyspace('test_nj',
'test_keyspace',
'Partitions(master): -40 40-80 80-\n'
'Partitions(rdonly): -40 40-80 80-\n'
'Partitions(replica): -40 40-80 80-\n',
keyspace_id_type=keyspace_id_type,
sharding_column_name='custom_sharding_key')
# copy the schema
utils.run_vtctl([
'CopySchemaShard', shard_0_rdonly.tablet_alias, 'test_keyspace/-80'
],
auto_log=True)
# copy the data (will also start filtered replication), reset source
utils.run_vtworker([
'--cell', 'test_nj', '--command_display_interval', '10ms',
'SplitClone', '--source_reader_count', '10',
'--min_table_size_for_split', '1', '--min_healthy_rdonly_tablets',
'1', 'test_keyspace/-80'
],
auto_log=True)
utils.run_vtctl(
['ChangeSlaveType', shard_0_rdonly.tablet_alias, 'rdonly'],
auto_log=True)
utils.run_vtctl(
['ChangeSlaveType', shard_1_rdonly.tablet_alias, 'rdonly'],
auto_log=True)
# check the startup values are in the right place
self._check_startup_values()
# check the schema too
utils.run_vtctl(['ValidateSchemaKeyspace', 'test_keyspace'],
auto_log=True)
# check binlog player variables
self.check_destination_master(
shard_dest_master, ['test_keyspace/-40', 'test_keyspace/40-80'])
# check that binlog server exported the stats vars
self.check_binlog_server_vars(shard_0_replica, horizontal=True)
self.check_binlog_server_vars(shard_1_replica, horizontal=True)
# testing filtered replication: insert a bunch of data on shard 0 and 1,
# check we get most of it after a few seconds, wait for binlog server
# timeout, check we get all of it.
logging.debug('Inserting lots of data on source shards')
self._insert_lots(1000)
logging.debug('Checking 80 percent of data is sent quickly')
v = self._check_lots_timeout(1000, 80, 10)
if v != 100:
# small optimization: only do this check if we don't have all the data
# already anyway.
logging.debug('Checking all data goes through eventually')
self._check_lots_timeout(1000, 100, 30)
self.check_binlog_player_vars(
shard_dest_master, ['test_keyspace/-40', 'test_keyspace/40-80'],
seconds_behind_master_max=30)
self.check_binlog_server_vars(shard_0_replica,
horizontal=True,
min_statements=1000,
min_transactions=1000)
self.check_binlog_server_vars(shard_1_replica,
horizontal=True,
min_statements=1000,
min_transactions=1000)
# use vtworker to compare the data (after health-checking the destination
# rdonly tablets so discovery works)
utils.run_vtctl(['RunHealthCheck', shard_dest_rdonly.tablet_alias])
logging.debug('Running vtworker SplitDiff on first half')
utils.run_vtworker([
'-cell', 'test_nj', 'SplitDiff', '--exclude_tables', 'unrelated',
'--min_healthy_rdonly_tablets', '1', '--source_uid', '0',
'test_keyspace/-80'
],
auto_log=True)
utils.run_vtctl(
['ChangeSlaveType', shard_0_rdonly.tablet_alias, 'rdonly'],
auto_log=True)
utils.run_vtctl(
['ChangeSlaveType', shard_dest_rdonly.tablet_alias, 'rdonly'],
auto_log=True)
logging.debug('Running vtworker SplitDiff on second half')
utils.run_vtworker([
'-cell', 'test_nj', 'SplitDiff', '--exclude_tables', 'unrelated',
'--min_healthy_rdonly_tablets', '1', '--source_uid', '1',
'test_keyspace/-80'
],
auto_log=True)
utils.run_vtctl(
['ChangeSlaveType', shard_1_rdonly.tablet_alias, 'rdonly'],
auto_log=True)
utils.run_vtctl(
['ChangeSlaveType', shard_dest_rdonly.tablet_alias, 'rdonly'],
auto_log=True)
# get status for the destination master tablet, make sure we have it all
self.check_running_binlog_player(shard_dest_master, 3000, 1000)
# check destination master query service is not running
utils.check_tablet_query_service(self, shard_dest_master, False, False)
stream_health = utils.run_vtctl_json([
'VtTabletStreamHealth', '-count', '1',
shard_dest_master.tablet_alias
])
logging.debug('Got health: %s', str(stream_health))
self.assertIn('realtime_stats', stream_health)
self.assertNotIn('serving', stream_health)
# check the destination master 3 is healthy, even though its query
# service is not running (if not healthy this would exception out)
shard_dest_master.get_healthz()
# now serve rdonly from the split shards
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/-80', 'rdonly'],
auto_log=True)
utils.check_srv_keyspace('test_nj',
'test_keyspace',
'Partitions(master): -40 40-80 80-\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -40 40-80 80-\n',
keyspace_id_type=keyspace_id_type,
sharding_column_name='custom_sharding_key')
# now serve replica from the split shards
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/-80', 'replica'],
auto_log=True)
utils.check_srv_keyspace('test_nj',
'test_keyspace',
'Partitions(master): -40 40-80 80-\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=keyspace_id_type,
sharding_column_name='custom_sharding_key')
# now serve master from the split shards
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/-80', 'master'],
auto_log=True)
utils.check_srv_keyspace('test_nj',
'test_keyspace',
'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=keyspace_id_type,
sharding_column_name='custom_sharding_key')
utils.check_tablet_query_service(self, shard_0_master, False, True)
utils.check_tablet_query_service(self, shard_1_master, False, True)
# check the binlog players are gone now
self.check_no_binlog_player(shard_dest_master)
# kill the original tablets in the original shards
tablet.kill_tablets([
shard_0_master, shard_0_replica, shard_0_rdonly, shard_1_master,
shard_1_replica, shard_1_rdonly
])
for t in [
shard_0_replica, shard_0_rdonly, shard_1_replica,
shard_1_rdonly
]:
utils.run_vtctl(['DeleteTablet', t.tablet_alias], auto_log=True)
for t in [shard_0_master, shard_1_master]:
utils.run_vtctl(['DeleteTablet', '-allow_master', t.tablet_alias],
auto_log=True)
# delete the original shards
utils.run_vtctl(['DeleteShard', 'test_keyspace/-40'], auto_log=True)
utils.run_vtctl(['DeleteShard', 'test_keyspace/40-80'], auto_log=True)
# rebuild the serving graph, all mentions of the old shards shoud be gone
utils.run_vtctl(['RebuildKeyspaceGraph', 'test_keyspace'],
auto_log=True)
# kill everything else
tablet.kill_tablets([
shard_2_master, shard_2_replica, shard_2_rdonly, shard_dest_master,
shard_dest_replica, shard_dest_rdonly
])
def test_resharding(self):
# create the keyspace with just one shard
shard_master.init_tablet('master',
keyspace='test_keyspace',
shard='0',
tablet_index=0)
shard_replica.init_tablet('replica',
keyspace='test_keyspace',
shard='0',
tablet_index=1)
shard_rdonly1.init_tablet('rdonly',
keyspace='test_keyspace',
shard='0',
tablet_index=2)
for t in [shard_master, shard_replica, shard_rdonly1]:
t.create_db('vt_test_keyspace')
shard_master.start_vttablet(wait_for_state=None)
shard_replica.start_vttablet(wait_for_state=None)
shard_rdonly1.start_vttablet(wait_for_state=None)
shard_master.wait_for_vttablet_state('SERVING')
for t in [shard_replica, shard_rdonly1]:
t.wait_for_vttablet_state('NOT_SERVING')
# reparent to make the tablets work
utils.run_vtctl([
'InitShardMaster', '-force', 'test_keyspace/0',
shard_master.tablet_alias
],
auto_log=True)
utils.wait_for_tablet_type(shard_replica.tablet_alias, 'replica')
utils.wait_for_tablet_type(shard_rdonly1.tablet_alias, 'rdonly')
for t in [shard_master, shard_replica, shard_rdonly1]:
t.wait_for_vttablet_state('SERVING')
# create the tables and add startup values
self._create_schema()
self._insert_startup_values()
# reload schema on all tablets so we can query them
for t in [shard_master, shard_replica, shard_rdonly1]:
utils.run_vtctl(['ReloadSchema', t.tablet_alias], auto_log=True)
# must start vtgate after tablets are up, or else wait until 1min refresh
# we want cache_ttl at zero so we re-read the topology for every test query.
utils.VtGate().start(
cache_ttl='0',
tablets=[shard_master, shard_replica, shard_rdonly1])
utils.vtgate.wait_for_endpoints('test_keyspace.0.master', 1)
utils.vtgate.wait_for_endpoints('test_keyspace.0.replica', 1)
utils.vtgate.wait_for_endpoints('test_keyspace.0.rdonly', 1)
# check the Map Reduce API works correctly, should use ExecuteShards,
# as we're not sharded yet.
# we have 3 values in the database, asking for 4 splits will get us
# a single query.
sql = 'select id, msg from resharding1'
s = utils.vtgate.split_query(sql, 'test_keyspace', 4)
self.assertEqual(len(s), 1)
self.assertEqual(s[0]['shard_part']['shards'][0], '0')
# change the schema, backfill keyspace_id, and change schema again
self._add_sharding_key_to_schema()
self._backfill_keyspace_id(shard_master)
self._mark_sharding_key_not_null()
# now we can be a sharded keyspace (and propagate to SrvKeyspace)
utils.run_vtctl([
'SetKeyspaceShardingInfo', 'test_keyspace', 'keyspace_id',
keyspace_id_type
])
utils.run_vtctl(['RebuildKeyspaceGraph', 'test_keyspace'],
auto_log=True)
# run a health check on source replica so it responds to discovery
utils.run_vtctl(['RunHealthCheck', shard_replica.tablet_alias])
# create the split shards
shard_0_master.init_tablet('master',
keyspace='test_keyspace',
shard='-80',
tablet_index=0)
shard_0_replica.init_tablet('replica',
keyspace='test_keyspace',
shard='-80',
tablet_index=1)
shard_0_rdonly1.init_tablet('rdonly',
keyspace='test_keyspace',
shard='-80',
tablet_index=2)
shard_1_master.init_tablet('master',
keyspace='test_keyspace',
shard='80-',
tablet_index=0)
shard_1_replica.init_tablet('replica',
keyspace='test_keyspace',
shard='80-',
tablet_index=1)
shard_1_rdonly1.init_tablet('rdonly',
keyspace='test_keyspace',
shard='80-',
tablet_index=2)
for t in [
shard_0_master, shard_0_replica, shard_1_master,
shard_1_replica
]:
t.create_db('vt_test_keyspace')
t.start_vttablet(wait_for_state=None)
for t in [shard_0_rdonly1, shard_1_rdonly1]:
t.create_db('vt_test_keyspace')
t.start_vttablet(wait_for_state=None)
for t in [shard_0_master, shard_1_master]:
t.wait_for_vttablet_state('SERVING')
for t in [
shard_0_replica, shard_0_rdonly1, shard_1_replica,
shard_1_rdonly1
]:
t.wait_for_vttablet_state('NOT_SERVING')
utils.run_vtctl([
'InitShardMaster', '-force', 'test_keyspace/-80',
shard_0_master.tablet_alias
],
auto_log=True)
utils.run_vtctl([
'InitShardMaster', '-force', 'test_keyspace/80-',
shard_1_master.tablet_alias
],
auto_log=True)
for t in [shard_0_replica, shard_1_replica]:
utils.wait_for_tablet_type(t.tablet_alias, 'replica')
for t in [shard_0_rdonly1, shard_1_rdonly1]:
utils.wait_for_tablet_type(t.tablet_alias, 'rdonly')
sharded_tablets = [
shard_0_master, shard_0_replica, shard_0_rdonly1, shard_1_master,
shard_1_replica, shard_1_rdonly1
]
for t in sharded_tablets:
t.wait_for_vttablet_state('SERVING')
# must restart vtgate after tablets are up, or else wait until 1min refresh
# we want cache_ttl at zero so we re-read the topology for every test query.
utils.vtgate.kill()
utils.VtGate().start(cache_ttl='0',
tablets=[
shard_master, shard_replica, shard_rdonly1,
shard_0_master, shard_0_replica,
shard_0_rdonly1, shard_1_master,
shard_1_replica, shard_1_rdonly1
])
utils.vtgate.wait_for_endpoints('test_keyspace.0.master', 1)
utils.vtgate.wait_for_endpoints('test_keyspace.0.replica', 1)
utils.vtgate.wait_for_endpoints('test_keyspace.0.rdonly', 1)
utils.vtgate.wait_for_endpoints('test_keyspace.-80.master', 1)
utils.vtgate.wait_for_endpoints('test_keyspace.-80.replica', 1)
utils.vtgate.wait_for_endpoints('test_keyspace.-80.rdonly', 1)
utils.vtgate.wait_for_endpoints('test_keyspace.80-.master', 1)
utils.vtgate.wait_for_endpoints('test_keyspace.80-.replica', 1)
utils.vtgate.wait_for_endpoints('test_keyspace.80-.rdonly', 1)
# check the Map Reduce API works correctly, should use ExecuteKeyRanges now,
# as we are sharded (with just one shard).
# again, we have 3 values in the database, asking for 4 splits will get us
# a single query.
sql = 'select id, msg from resharding1'
s = utils.vtgate.split_query(sql, 'test_keyspace', 4)
self.assertEqual(len(s), 1)
self.assertEqual(s[0]['key_range_part']['keyspace'], 'test_keyspace')
# There must be one empty KeyRange which represents the full keyspace.
self.assertEqual(len(s[0]['key_range_part']['key_ranges']), 1)
self.assertEqual(s[0]['key_range_part']['key_ranges'][0], {})
utils.check_srv_keyspace('test_nj',
'test_keyspace', 'Partitions(master): -\n'
'Partitions(rdonly): -\n'
'Partitions(replica): -\n',
keyspace_id_type=keyspace_id_type)
# we need to create the schema, and the worker will do data copying
for keyspace_shard in ('test_keyspace/-80', 'test_keyspace/80-'):
utils.run_vtctl([
'CopySchemaShard', '--exclude_tables', 'unrelated',
shard_rdonly1.tablet_alias, keyspace_shard
],
auto_log=True)
utils.run_vtctl(['RunHealthCheck', shard_rdonly1.tablet_alias])
utils.run_vtworker([
'--cell', 'test_nj', '--command_display_interval', '10ms',
'SplitClone', '--exclude_tables', 'unrelated',
'--source_reader_count', '10', '--min_table_size_for_split', '1',
'--min_healthy_rdonly_tablets', '1', 'test_keyspace/0'
],
auto_log=True)
# check the startup values are in the right place
self._check_startup_values()
# check the schema too
utils.run_vtctl(['ValidateSchemaKeyspace', 'test_keyspace'],
auto_log=True)
# check the binlog players are running
logging.debug('Waiting for binlog players to start on new masters...')
self.check_destination_master(shard_0_master, ['test_keyspace/0'])
self.check_destination_master(shard_1_master, ['test_keyspace/0'])
# check that binlog server exported the stats vars
self.check_binlog_server_vars(shard_replica, horizontal=True)
# testing filtered replication: insert a bunch of data on shard 1,
# check we get most of it after a few seconds, wait for binlog server
# timeout, check we get all of it.
logging.debug('Inserting lots of data on source shard')
self._insert_lots(1000)
logging.debug('Checking 80 percent of data is sent quickly')
v = self._check_lots_timeout(1000, 80, 5)
if v != 100:
logging.debug('Checking all data goes through eventually')
self._check_lots_timeout(1000, 100, 20)
logging.debug('Checking no data was sent the wrong way')
self._check_lots_not_present(1000)
self.check_binlog_player_vars(shard_0_master, ['test_keyspace/0'],
seconds_behind_master_max=30)
self.check_binlog_player_vars(shard_1_master, ['test_keyspace/0'],
seconds_behind_master_max=30)
self.check_binlog_server_vars(shard_replica,
horizontal=True,
min_statements=1000,
min_transactions=1000)
# use vtworker to compare the data
logging.debug('Running vtworker SplitDiff for -80')
for t in [shard_0_rdonly1, shard_1_rdonly1]:
utils.run_vtctl(['RunHealthCheck', t.tablet_alias])
utils.run_vtworker([
'-cell', 'test_nj', 'SplitDiff', '--min_healthy_rdonly_tablets',
'1', 'test_keyspace/-80'
],
auto_log=True)
logging.debug('Running vtworker SplitDiff for 80-')
utils.run_vtworker([
'-cell', 'test_nj', 'SplitDiff', '--min_healthy_rdonly_tablets',
'1', 'test_keyspace/80-'
],
auto_log=True)
utils.pause('Good time to test vtworker for diffs')
# get status for the destination master tablet, make sure we have it all
self.check_running_binlog_player(shard_0_master, 2000, 2000)
self.check_running_binlog_player(shard_1_master, 6000, 2000)
# check we can't migrate the master just yet
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/0', 'master'],
expect_fail=True)
# now serve rdonly from the split shards
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/0', 'rdonly'],
auto_log=True)
utils.check_srv_keyspace('test_nj',
'test_keyspace', 'Partitions(master): -\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -\n',
keyspace_id_type=keyspace_id_type)
# make sure rdonly tablets are back to serving before hitting vtgate.
for t in [shard_0_rdonly1, shard_1_rdonly1]:
t.wait_for_vttablet_state('SERVING')
utils.vtgate.wait_for_endpoints('test_keyspace.-80.rdonly', 1)
utils.vtgate.wait_for_endpoints('test_keyspace.80-.rdonly', 1)
# check the Map Reduce API works correctly, should use ExecuteKeyRanges
# on both destination shards now.
# we ask for 2 splits to only have one per shard
sql = 'select id, msg from resharding1'
s = utils.vtgate.split_query(sql, 'test_keyspace', 2)
self.assertEqual(len(s), 2)
self.assertEqual(s[0]['key_range_part']['keyspace'], 'test_keyspace')
self.assertEqual(s[1]['key_range_part']['keyspace'], 'test_keyspace')
self.assertEqual(len(s[0]['key_range_part']['key_ranges']), 1)
self.assertEqual(len(s[1]['key_range_part']['key_ranges']), 1)
# then serve replica from the split shards
source_tablet = shard_replica
destination_tablets = [shard_0_replica, shard_1_replica]
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/0', 'replica'],
auto_log=True)
utils.check_srv_keyspace('test_nj',
'test_keyspace', 'Partitions(master): -\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=keyspace_id_type)
# move replica back and forth
utils.run_vtctl(
['MigrateServedTypes', '-reverse', 'test_keyspace/0', 'replica'],
auto_log=True)
# After a backwards migration, queryservice should be enabled on
# source and disabled on destinations
utils.check_tablet_query_service(self, source_tablet, True, False)
utils.check_tablet_query_services(self, destination_tablets, False,
True)
utils.check_srv_keyspace('test_nj',
'test_keyspace', 'Partitions(master): -\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -\n',
keyspace_id_type=keyspace_id_type)
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/0', 'replica'],
auto_log=True)
# After a forwards migration, queryservice should be disabled on
# source and enabled on destinations
utils.check_tablet_query_service(self, source_tablet, False, True)
utils.check_tablet_query_services(self, destination_tablets, True,
False)
utils.check_srv_keyspace('test_nj',
'test_keyspace', 'Partitions(master): -\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=keyspace_id_type)
# then serve master from the split shards
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/0', 'master'],
auto_log=True)
utils.check_srv_keyspace('test_nj',
'test_keyspace',
'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=keyspace_id_type)
# check the binlog players are gone now
self.check_no_binlog_player(shard_0_master)
self.check_no_binlog_player(shard_1_master)
# make sure we can't delete a shard with tablets
utils.run_vtctl(['DeleteShard', 'test_keyspace/0'], expect_fail=True)
# remove the original tablets in the original shard
tablet.kill_tablets([shard_master, shard_replica, shard_rdonly1])
for t in [shard_replica, shard_rdonly1]:
utils.run_vtctl(['DeleteTablet', t.tablet_alias], auto_log=True)
utils.run_vtctl(
['DeleteTablet', '-allow_master', shard_master.tablet_alias],
auto_log=True)
# rebuild the serving graph, all mentions of the old shards shoud be gone
utils.run_vtctl(['RebuildKeyspaceGraph', 'test_keyspace'],
auto_log=True)
# delete the original shard
utils.run_vtctl(['DeleteShard', 'test_keyspace/0'], auto_log=True)
# kill everything else
tablet.kill_tablets([
shard_0_master, shard_0_replica, shard_0_rdonly1, shard_1_master,
shard_1_replica, shard_1_rdonly1
])
def test_resharding(self):
# create the keyspace with just one shard
utils.run_vtctl(['CreateKeyspace', 'test_keyspace'])
utils.run_vtctl([
'SetKeyspaceShardingInfo', '-force', 'test_keyspace',
'keyspace_id', keyspace_id_type
])
shard_master.init_tablet('master', 'test_keyspace', '0')
shard_replica.init_tablet('replica', 'test_keyspace', '0')
shard_rdonly1.init_tablet('rdonly', 'test_keyspace', '0')
utils.run_vtctl(['RebuildKeyspaceGraph', 'test_keyspace'],
auto_log=True)
# create databases so vttablet can start behaving normally
for t in [shard_master, shard_replica, shard_rdonly1]:
t.create_db('vt_test_keyspace')
t.start_vttablet(wait_for_state=None)
# wait for the tablets
shard_master.wait_for_vttablet_state('SERVING')
shard_replica.wait_for_vttablet_state('SERVING')
shard_rdonly1.wait_for_vttablet_state('SERVING')
# reparent to make the tablets work
utils.run_vtctl(
['InitShardMaster', 'test_keyspace/0', shard_master.tablet_alias],
auto_log=True)
# create the tables and add startup values
self._create_schema()
self._insert_startup_values()
# change the schema, backfill keyspace_id, and change schema again
self._add_sharding_key_to_schema()
self._backfill_keyspace_id(shard_master)
self._mark_sharding_key_not_null()
# create the split shards
shard_0_master.init_tablet('master', 'test_keyspace', '-80')
shard_0_replica.init_tablet('replica', 'test_keyspace', '-80')
shard_0_rdonly1.init_tablet('rdonly', 'test_keyspace', '-80')
shard_1_master.init_tablet('master', 'test_keyspace', '80-')
shard_1_replica.init_tablet('replica', 'test_keyspace', '80-')
shard_1_rdonly1.init_tablet('rdonly', 'test_keyspace', '80-')
# start vttablet on the split shards (no db created,
# so they're all not serving)
for t in [
shard_0_master, shard_0_replica, shard_0_rdonly1,
shard_1_master, shard_1_replica, shard_1_rdonly1
]:
t.start_vttablet(wait_for_state=None)
for t in [
shard_0_master, shard_0_replica, shard_0_rdonly1,
shard_1_master, shard_1_replica, shard_1_rdonly1
]:
t.wait_for_vttablet_state('NOT_SERVING')
utils.run_vtctl([
'InitShardMaster', 'test_keyspace/-80', shard_0_master.tablet_alias
],
auto_log=True)
utils.run_vtctl([
'InitShardMaster', 'test_keyspace/80-', shard_1_master.tablet_alias
],
auto_log=True)
utils.run_vtctl(['RebuildKeyspaceGraph', 'test_keyspace'],
auto_log=True)
utils.check_srv_keyspace('test_nj',
'test_keyspace',
'Partitions(master): -\n' +
'Partitions(rdonly): -\n' +
'Partitions(replica): -\n',
keyspace_id_type=keyspace_id_type)
# we need to create the schema, and the worker will do data copying
for keyspace_shard in ('test_keyspace/-80', 'test_keyspace/80-'):
utils.run_vtctl([
'CopySchemaShard', '--exclude_tables', 'unrelated',
shard_rdonly1.tablet_alias, keyspace_shard
],
auto_log=True)
utils.run_vtworker([
'--cell', 'test_nj', '--command_display_interval', '10ms',
'SplitClone', '--exclude_tables', 'unrelated',
'--strategy=-populate_blp_checkpoint', '--source_reader_count',
'10', '--min_table_size_for_split', '1', 'test_keyspace/0'
],
auto_log=True)
utils.run_vtctl(
['ChangeSlaveType', shard_rdonly1.tablet_alias, 'rdonly'],
auto_log=True)
# check the startup values are in the right place
self._check_startup_values()
# check the schema too
utils.run_vtctl(['ValidateSchemaKeyspace', 'test_keyspace'],
auto_log=True)
# check the binlog players are running
logging.debug("Waiting for binlog players to start on new masters...")
shard_0_master.wait_for_binlog_player_count(1)
shard_1_master.wait_for_binlog_player_count(1)
# testing filtered replication: insert a bunch of data on shard 1,
# check we get most of it after a few seconds, wait for binlog server
# timeout, check we get all of it.
logging.debug("Inserting lots of data on source shard")
self._insert_lots(1000)
logging.debug("Checking 80 percent of data is sent quickly")
self._check_lots_timeout(1000, 80, 5)
logging.debug("Checking all data goes through eventually")
self._check_lots_timeout(1000, 100, 20)
logging.debug("Checking no data was sent the wrong way")
self._check_lots_not_present(1000)
# use vtworker to compare the data
logging.debug("Running vtworker SplitDiff for -80")
utils.run_vtworker(
['-cell', 'test_nj', 'SplitDiff', 'test_keyspace/-80'],
auto_log=True)
utils.run_vtctl(
['ChangeSlaveType', shard_rdonly1.tablet_alias, 'rdonly'],
auto_log=True)
utils.run_vtctl(
['ChangeSlaveType', shard_0_rdonly1.tablet_alias, 'rdonly'],
auto_log=True)
logging.debug("Running vtworker SplitDiff for 80-")
utils.run_vtworker(
['-cell', 'test_nj', 'SplitDiff', 'test_keyspace/80-'],
auto_log=True)
utils.run_vtctl(
['ChangeSlaveType', shard_rdonly1.tablet_alias, 'rdonly'],
auto_log=True)
utils.run_vtctl(
['ChangeSlaveType', shard_1_rdonly1.tablet_alias, 'rdonly'],
auto_log=True)
utils.pause("Good time to test vtworker for diffs")
# check we can't migrate the master just yet
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/0', 'master'],
expect_fail=True)
# now serve rdonly from the split shards
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/0', 'rdonly'],
auto_log=True)
utils.check_srv_keyspace('test_nj',
'test_keyspace',
'Partitions(master): -\n' +
'Partitions(rdonly): -80 80-\n' +
'Partitions(replica): -\n',
keyspace_id_type=keyspace_id_type)
# then serve replica from the split shards
source_tablet = shard_replica
destination_tablets = [shard_0_replica, shard_1_replica]
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/0', 'replica'],
auto_log=True)
utils.check_srv_keyspace('test_nj',
'test_keyspace',
'Partitions(master): -\n' +
'Partitions(rdonly): -80 80-\n' +
'Partitions(replica): -80 80-\n',
keyspace_id_type=keyspace_id_type)
# move replica back and forth
utils.run_vtctl(
['MigrateServedTypes', '-reverse', 'test_keyspace/0', 'replica'],
auto_log=True)
# After a backwards migration, queryservice should be enabled on source and disabled on destinations
utils.check_tablet_query_service(self, source_tablet, True, False)
utils.check_tablet_query_services(self, destination_tablets, False,
True)
utils.check_srv_keyspace('test_nj',
'test_keyspace',
'Partitions(master): -\n' +
'Partitions(rdonly): -80 80-\n' +
'Partitions(replica): -\n',
keyspace_id_type=keyspace_id_type)
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/0', 'replica'],
auto_log=True)
# After a forwards migration, queryservice should be disabled on source and enabled on destinations
utils.check_tablet_query_service(self, source_tablet, False, True)
utils.check_tablet_query_services(self, destination_tablets, True,
False)
utils.check_srv_keyspace('test_nj',
'test_keyspace',
'Partitions(master): -\n' +
'Partitions(rdonly): -80 80-\n' +
'Partitions(replica): -80 80-\n',
keyspace_id_type=keyspace_id_type)
# then serve master from the split shards
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/0', 'master'],
auto_log=True)
utils.check_srv_keyspace('test_nj',
'test_keyspace',
'Partitions(master): -80 80-\n' +
'Partitions(rdonly): -80 80-\n' +
'Partitions(replica): -80 80-\n',
keyspace_id_type=keyspace_id_type)
# check the binlog players are gone now
shard_0_master.wait_for_binlog_player_count(0)
shard_1_master.wait_for_binlog_player_count(0)
# make sure we can't delete a shard with tablets
utils.run_vtctl(['DeleteShard', 'test_keyspace/0'], expect_fail=True)
# scrap the original tablets in the original shard
for t in [shard_master, shard_replica, shard_rdonly1]:
utils.run_vtctl(['ScrapTablet', t.tablet_alias], auto_log=True)
tablet.kill_tablets([shard_master, shard_replica, shard_rdonly1])
for t in [shard_master, shard_replica, shard_rdonly1]:
utils.run_vtctl(['DeleteTablet', t.tablet_alias], auto_log=True)
# rebuild the serving graph, all mentions of the old shards shoud be gone
utils.run_vtctl(['RebuildKeyspaceGraph', 'test_keyspace'],
auto_log=True)
# delete the original shard
utils.run_vtctl(['DeleteShard', 'test_keyspace/0'], auto_log=True)
# kill everything else
tablet.kill_tablets([
shard_0_master, shard_0_replica, shard_0_rdonly1, shard_1_master,
shard_1_replica, shard_1_rdonly1
])
def test_vertical_split(self):
utils.run_vtctl([
'CopySchemaShard', '--tables', '/moving/,view1',
source_rdonly1.tablet_alias, 'destination_keyspace/0'
],
auto_log=True)
utils.run_vtworker([
'--cell', 'test_nj', '--command_display_interval', '10ms',
'--use_v3_resharding_mode=false', 'VerticalSplitClone', '--tables',
'/moving/,view1', '--chunk_count', '10', '--min_rows_per_chunk',
'1', '--min_healthy_tablets', '1', 'destination_keyspace/0'
],
auto_log=True)
# test Cancel first
utils.run_vtctl(['CancelResharding', 'destination_keyspace/0'],
auto_log=True)
self.check_no_binlog_player(destination_master)
# master should be in serving state after cancel
utils.check_tablet_query_service(self, destination_master, True, False)
# redo VerticalSplitClone
utils.run_vtworker([
'--cell', 'test_nj', '--command_display_interval', '10ms',
'--use_v3_resharding_mode=false', 'VerticalSplitClone', '--tables',
'/moving/,view1', '--chunk_count', '10', '--min_rows_per_chunk',
'1', '--min_healthy_tablets', '1', 'destination_keyspace/0'
],
auto_log=True)
# check values are present
self._check_values(destination_master, 'vt_destination_keyspace',
'moving1', self.moving1_first, 100)
self._check_values(destination_master, 'vt_destination_keyspace',
'moving2', self.moving2_first, 100)
self._check_values(destination_master, 'vt_destination_keyspace',
'view1', self.moving1_first, 100)
if base_sharding.use_rbr:
self._check_values(destination_master, 'vt_destination_keyspace',
'moving3_no_pk', self.moving3_no_pk_first, 100)
# Verify vreplication table entries
result = destination_master.mquery('_vt', 'select * from vreplication')
self.assertEqual(len(result), 1)
self.assertEqual(result[0][1], 'SplitClone')
self.assertEqual(
result[0][2],
'keyspace:"source_keyspace" shard:"0" tables:"/moving/" tables:"view1" '
)
# check the binlog player is running and exporting vars
self.check_destination_master(destination_master,
['source_keyspace/0'])
# check that binlog server exported the stats vars
self.check_binlog_server_vars(source_replica, horizontal=False)
# add values to source, make sure they're replicated
moving1_first_add1 = self._insert_values('moving1', 100)
_ = self._insert_values('staying1', 100)
moving2_first_add1 = self._insert_values('moving2', 100)
self._check_values_timeout(destination_master,
'vt_destination_keyspace', 'moving1',
moving1_first_add1, 100)
self._check_values_timeout(destination_master,
'vt_destination_keyspace', 'moving2',
moving2_first_add1, 100)
self.check_binlog_player_vars(destination_master,
['source_keyspace/0'],
seconds_behind_master_max=30)
self.check_binlog_server_vars(source_replica,
horizontal=False,
min_statements=100,
min_transactions=100)
# use vtworker to compare the data
logging.debug('Running vtworker VerticalSplitDiff')
utils.run_vtworker([
'-cell', 'test_nj', '--use_v3_resharding_mode=false',
'VerticalSplitDiff', '--min_healthy_rdonly_tablets', '1',
'destination_keyspace/0'
],
auto_log=True)
utils.pause('Good time to test vtworker for diffs')
# get status for destination master tablet, make sure we have it all
self.check_running_binlog_player(destination_master,
700,
300,
extra_text='moving')
# check query service is off on destination master, as filtered
# replication is enabled. Even health check should not interfere.
destination_master_vars = utils.get_vars(destination_master.port)
self.assertEqual(destination_master_vars['TabletStateName'],
'NOT_SERVING')
# check we can't migrate the master just yet
utils.run_vtctl(
['MigrateServedFrom', 'destination_keyspace/0', 'master'],
expect_fail=True)
# migrate rdonly only in test_ny cell, make sure nothing is migrated
# in test_nj
utils.run_vtctl([
'MigrateServedFrom', '--cells=test_ny', 'destination_keyspace/0',
'rdonly'
],
auto_log=True)
self._check_srv_keyspace('ServedFrom(master): source_keyspace\n'
'ServedFrom(rdonly): source_keyspace\n'
'ServedFrom(replica): source_keyspace\n')
self._check_blacklisted_tables(source_master, None)
self._check_blacklisted_tables(source_replica, None)
self._check_blacklisted_tables(source_rdonly1, None)
self._check_blacklisted_tables(source_rdonly2, None)
# migrate test_nj only, using command line manual fix command,
# and restore it back.
keyspace_json = utils.run_vtctl_json(
['GetKeyspace', 'destination_keyspace'])
found = False
for ksf in keyspace_json['served_froms']:
if ksf['tablet_type'] == topodata_pb2.RDONLY:
found = True
self.assertEqual(sorted(ksf['cells']), ['test_ca', 'test_nj'])
self.assertTrue(found)
utils.run_vtctl([
'SetKeyspaceServedFrom', '-source=source_keyspace', '-remove',
'-cells=test_nj,test_ca', 'destination_keyspace', 'rdonly'
],
auto_log=True)
keyspace_json = utils.run_vtctl_json(
['GetKeyspace', 'destination_keyspace'])
found = False
for ksf in keyspace_json['served_froms']:
if ksf['tablet_type'] == topodata_pb2.RDONLY:
found = True
self.assertFalse(found)
utils.run_vtctl([
'SetKeyspaceServedFrom', '-source=source_keyspace',
'destination_keyspace', 'rdonly'
],
auto_log=True)
keyspace_json = utils.run_vtctl_json(
['GetKeyspace', 'destination_keyspace'])
found = False
for ksf in keyspace_json['served_froms']:
if ksf['tablet_type'] == topodata_pb2.RDONLY:
found = True
self.assertTrue('cells' not in ksf or not ksf['cells'])
self.assertTrue(found)
# now serve rdonly from the destination shards
utils.run_vtctl(
['MigrateServedFrom', 'destination_keyspace/0', 'rdonly'],
auto_log=True)
self._check_srv_keyspace('ServedFrom(master): source_keyspace\n'
'ServedFrom(replica): source_keyspace\n')
self._check_blacklisted_tables(source_master, None)
self._check_blacklisted_tables(source_replica, None)
self._check_blacklisted_tables(source_rdonly1, ['/moving/', 'view1'])
self._check_blacklisted_tables(source_rdonly2, ['/moving/', 'view1'])
self._check_client_conn_redirection('destination_keyspace',
['master', 'replica'],
['moving1', 'moving2'])
# then serve replica from the destination shards
utils.run_vtctl(
['MigrateServedFrom', 'destination_keyspace/0', 'replica'],
auto_log=True)
self._check_srv_keyspace('ServedFrom(master): source_keyspace\n')
self._check_blacklisted_tables(source_master, None)
self._check_blacklisted_tables(source_replica, ['/moving/', 'view1'])
self._check_blacklisted_tables(source_rdonly1, ['/moving/', 'view1'])
self._check_blacklisted_tables(source_rdonly2, ['/moving/', 'view1'])
self._check_client_conn_redirection('destination_keyspace', ['master'],
['moving1', 'moving2'])
# move replica back and forth
utils.run_vtctl([
'MigrateServedFrom', '-reverse', 'destination_keyspace/0',
'replica'
],
auto_log=True)
self._check_srv_keyspace('ServedFrom(master): source_keyspace\n'
'ServedFrom(replica): source_keyspace\n')
self._check_blacklisted_tables(source_master, None)
self._check_blacklisted_tables(source_replica, None)
self._check_blacklisted_tables(source_rdonly1, ['/moving/', 'view1'])
self._check_blacklisted_tables(source_rdonly2, ['/moving/', 'view1'])
utils.run_vtctl(
['MigrateServedFrom', 'destination_keyspace/0', 'replica'],
auto_log=True)
self._check_srv_keyspace('ServedFrom(master): source_keyspace\n')
self._check_blacklisted_tables(source_master, None)
self._check_blacklisted_tables(source_replica, ['/moving/', 'view1'])
self._check_blacklisted_tables(source_rdonly1, ['/moving/', 'view1'])
self._check_blacklisted_tables(source_rdonly2, ['/moving/', 'view1'])
self._check_client_conn_redirection('destination_keyspace', ['master'],
['moving1', 'moving2'])
# Cancel should fail now
utils.run_vtctl(['CancelResharding', 'destination_keyspace/0'],
auto_log=True,
expect_fail=True)
# then serve master from the destination shards
utils.run_vtctl(
['MigrateServedFrom', 'destination_keyspace/0', 'master'],
auto_log=True)
self._check_srv_keyspace('')
self._check_blacklisted_tables(source_master, ['/moving/', 'view1'])
self._check_blacklisted_tables(source_replica, ['/moving/', 'view1'])
self._check_blacklisted_tables(source_rdonly1, ['/moving/', 'view1'])
self._check_blacklisted_tables(source_rdonly2, ['/moving/', 'view1'])
# check the binlog player is gone now
self.check_no_binlog_player(destination_master)
# check the stats are correct
self._check_stats()
# now remove the tables on the source shard. The blacklisted tables
# in the source shard won't match any table, make sure that works.
utils.run_vtctl(
['ApplySchema', '-sql=drop view view1', 'source_keyspace'],
auto_log=True)
for t in ['moving1', 'moving2']:
utils.run_vtctl(
['ApplySchema',
'-sql=drop table %s' % (t), 'source_keyspace'],
auto_log=True)
for t in [
source_master, source_replica, source_rdonly1, source_rdonly2
]:
utils.run_vtctl(['ReloadSchema', t.tablet_alias])
qr = source_master.execute('select count(1) from staying1')
self.assertEqual(len(qr['rows']), 1,
'cannot read staying1: got %s' % str(qr))
# test SetShardTabletControl
self._verify_vtctl_set_shard_tablet_control()
