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):
# 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('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 = 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()
# 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_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_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)
# 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):
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()
# 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")
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)
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
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")
# 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
source_tablet = shard_1_slave2
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, tablet.Tablet.tablet_type_value["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, tablet.Tablet.tablet_type_value["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])
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)
# scrap the original tablets in the original shard
for t in [shard_1_master, shard_1_slave1, shard_1_slave2, shard_1_ny_rdonly, shard_1_rdonly1]:
utils.run_vtctl(["ScrapTablet", t.tablet_alias], auto_log=True)
tablet.kill_tablets([shard_1_master, shard_1_slave1, shard_1_slave2, shard_1_ny_rdonly, shard_1_rdonly1])
for t in [shard_1_master, shard_1_slave1, shard_1_slave2, shard_1_ny_rdonly, shard_1_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)
# 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):
# 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_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.
# min_table_size_for_split is set to 1 as to force a split even on the
# small table we have.
# --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',
'--min_table_size_for_split', '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)
# 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 (provokes a delete).
self._insert_value(shard_3_master, 'resharding1', 4, 'msg4',
0xD000000000000000)
workerclient_proc = utils.run_vtworker_client_bg(
['SplitClone',
'--exclude_tables', 'unrelated',
'--min_table_size_for_split', '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, 1)
self.verify_reconciliation_counters(worker_port, 'Offline', 'resharding1',
0, 0, 0)
# 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_binlog_throttler(shard_2_master.rpc_endpoint(),
['BinlogPlayer/0'], 9999)
self.check_binlog_throttler(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_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',
'--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])
