def test_resharding(self):
# create the keyspace with just one shard
shard_master.init_tablet(
'master',
keyspace='test_keyspace',
shard='0',
tablet_index=0)
shard_replica.init_tablet(
'replica',
keyspace='test_keyspace',
shard='0',
tablet_index=1)
shard_rdonly1.init_tablet(
'rdonly',
keyspace='test_keyspace',
shard='0',
tablet_index=2)
for t in [shard_master, shard_replica, shard_rdonly1]:
t.create_db('vt_test_keyspace')
shard_master.start_vttablet(wait_for_state=None)
shard_replica.start_vttablet(wait_for_state=None)
shard_rdonly1.start_vttablet(wait_for_state=None)
shard_master.wait_for_vttablet_state('SERVING')
for t in [shard_replica, shard_rdonly1]:
t.wait_for_vttablet_state('NOT_SERVING')
# reparent to make the tablets work
utils.run_vtctl(['InitShardMaster', '-force', 'test_keyspace/0',
shard_master.tablet_alias], auto_log=True)
utils.wait_for_tablet_type(shard_replica.tablet_alias, 'replica')
utils.wait_for_tablet_type(shard_rdonly1.tablet_alias, 'rdonly')
for t in [shard_master, shard_replica, shard_rdonly1]:
t.wait_for_vttablet_state('SERVING')
# create the tables and add startup values
self._create_schema()
self._insert_startup_values()
# reload schema on all tablets so we can query them
for t in [shard_master, shard_replica, shard_rdonly1]:
utils.run_vtctl(['ReloadSchema', t.tablet_alias], auto_log=True)
# must start vtgate after tablets are up, or else wait until 1min refresh
# we want cache_ttl at zero so we re-read the topology for every test query.
utils.VtGate().start(cache_ttl='0', tablets=[
shard_master, shard_replica, shard_rdonly1])
utils.vtgate.wait_for_endpoints('test_keyspace.0.master', 1)
utils.vtgate.wait_for_endpoints('test_keyspace.0.replica', 1)
utils.vtgate.wait_for_endpoints('test_keyspace.0.rdonly', 1)
# check the Map Reduce API works correctly, should use ExecuteShards,
# as we're not sharded yet.
# we have 3 values in the database, asking for 4 splits will get us
# a single query.
sql = 'select id, msg from resharding1'
s = utils.vtgate.split_query(sql, 'test_keyspace', 4)
self.assertEqual(len(s), 1)
self.assertEqual(s[0]['shard_part']['shards'][0], '0')
# change the schema, backfill keyspace_id, and change schema again
self._add_sharding_key_to_schema()
self._backfill_keyspace_id(shard_master)
self._mark_sharding_key_not_null()
# now we can be a sharded keyspace (and propagate to SrvKeyspace)
utils.run_vtctl(['SetKeyspaceShardingInfo', 'test_keyspace',
'custom_ksid_col', base_sharding.keyspace_id_type])
utils.run_vtctl(['RebuildKeyspaceGraph', 'test_keyspace'],
auto_log=True)
# run a health check on source replica so it responds to discovery
utils.run_vtctl(['RunHealthCheck', shard_replica.tablet_alias])
# create the split shards
shard_0_master.init_tablet(
'master',
keyspace='test_keyspace',
shard='-80',
tablet_index=0)
shard_0_replica.init_tablet(
'replica',
keyspace='test_keyspace',
shard='-80',
tablet_index=1)
shard_0_rdonly1.init_tablet(
'rdonly',
keyspace='test_keyspace',
shard='-80',
tablet_index=2)
shard_1_master.init_tablet(
'master',
keyspace='test_keyspace',
shard='80-',
tablet_index=0)
shard_1_replica.init_tablet(
'replica',
keyspace='test_keyspace',
shard='80-',
tablet_index=1)
shard_1_rdonly1.init_tablet(
'rdonly',
keyspace='test_keyspace',
shard='80-',
tablet_index=2)
for t in [shard_0_master, shard_0_replica,
shard_1_master, shard_1_replica]:
t.create_db('vt_test_keyspace')
t.start_vttablet(wait_for_state=None)
for t in [shard_0_rdonly1, shard_1_rdonly1]:
t.create_db('vt_test_keyspace')
t.start_vttablet(wait_for_state=None)
for t in [shard_0_master, shard_1_master]:
t.wait_for_vttablet_state('SERVING')
for t in [shard_0_replica, shard_0_rdonly1,
shard_1_replica, shard_1_rdonly1]:
t.wait_for_vttablet_state('NOT_SERVING')
utils.run_vtctl(['InitShardMaster', '-force', 'test_keyspace/-80',
shard_0_master.tablet_alias], auto_log=True)
utils.run_vtctl(['InitShardMaster', '-force', 'test_keyspace/80-',
shard_1_master.tablet_alias], auto_log=True)
for t in [shard_0_replica, shard_1_replica]:
utils.wait_for_tablet_type(t.tablet_alias, 'replica')
for t in [shard_0_rdonly1, shard_1_rdonly1]:
utils.wait_for_tablet_type(t.tablet_alias, 'rdonly')
sharded_tablets = [shard_0_master, shard_0_replica, shard_0_rdonly1,
shard_1_master, shard_1_replica, shard_1_rdonly1]
for t in sharded_tablets:
t.wait_for_vttablet_state('SERVING')
# must restart vtgate after tablets are up, or else wait until 1min refresh
# we want cache_ttl at zero so we re-read the topology for every test query.
utils.vtgate.kill()
utils.VtGate().start(cache_ttl='0', tablets=[
shard_master, shard_replica, shard_rdonly1,
shard_0_master, shard_0_replica, shard_0_rdonly1,
shard_1_master, shard_1_replica, shard_1_rdonly1])
utils.vtgate.wait_for_endpoints('test_keyspace.0.master', 1)
utils.vtgate.wait_for_endpoints('test_keyspace.0.replica', 1)
utils.vtgate.wait_for_endpoints('test_keyspace.0.rdonly', 1)
utils.vtgate.wait_for_endpoints('test_keyspace.-80.master', 1)
utils.vtgate.wait_for_endpoints('test_keyspace.-80.replica', 1)
utils.vtgate.wait_for_endpoints('test_keyspace.-80.rdonly', 1)
utils.vtgate.wait_for_endpoints('test_keyspace.80-.master', 1)
utils.vtgate.wait_for_endpoints('test_keyspace.80-.replica', 1)
utils.vtgate.wait_for_endpoints('test_keyspace.80-.rdonly', 1)
# check the Map Reduce API works correctly, should use ExecuteKeyRanges now,
# as we are sharded (with just one shard).
# again, we have 3 values in the database, asking for 4 splits will get us
# a single query.
sql = 'select id, msg from resharding1'
s = utils.vtgate.split_query(sql, 'test_keyspace', 4)
self.assertEqual(len(s), 1)
self.assertEqual(s[0]['key_range_part']['keyspace'], 'test_keyspace')
# There must be one empty KeyRange which represents the full keyspace.
self.assertEqual(len(s[0]['key_range_part']['key_ranges']), 1)
self.assertEqual(s[0]['key_range_part']['key_ranges'][0], {})
utils.check_srv_keyspace('test_nj', 'test_keyspace',
'Partitions(master): -\n'
'Partitions(rdonly): -\n'
'Partitions(replica): -\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
# we need to create the schema, and the worker will do data copying
for keyspace_shard in ('test_keyspace/-80', 'test_keyspace/80-'):
utils.run_vtctl(['CopySchemaShard',
'--exclude_tables', 'unrelated',
shard_rdonly1.tablet_alias,
keyspace_shard],
auto_log=True)
utils.run_vtctl(['RunHealthCheck', shard_rdonly1.tablet_alias])
# Run vtworker as daemon for the following SplitClone commands.
worker_proc, worker_port, worker_rpc_port = utils.run_vtworker_bg(
['--cell', 'test_nj', '--command_display_interval', '10ms'],
auto_log=True)
# 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',
'test_keyspace/0'],
worker_rpc_port)
utils.wait_procs([workerclient_proc])
self.verify_reconciliation_counters(worker_port, 'Online', 'resharding1',
3, 0, 0)
# Reset vtworker such that we can run the next command.
workerclient_proc = utils.run_vtworker_client_bg(['Reset'], worker_rpc_port)
utils.wait_procs([workerclient_proc])
# Modify the destination shard. SplitClone will revert the changes.
# Delete row 1 (provokes an insert).
shard_0_master.mquery('vt_test_keyspace',
'delete from resharding1 where id=1', write=True)
# Delete row 2 (provokes an insert).
shard_1_master.mquery('vt_test_keyspace',
'delete from resharding1 where id=2', write=True)
# Update row 3 (provokes an update).
shard_1_master.mquery('vt_test_keyspace',
"update resharding1 set msg='msg-not-3' where id=3",
write=True)
# Insert row 4 (provokes a delete).
self._insert_value(shard_1_master, 'resharding1', 4, 'msg4',
0xD000000000000000)
workerclient_proc = utils.run_vtworker_client_bg(
['SplitClone',
'--exclude_tables', 'unrelated',
'--min_table_size_for_split', '1',
'--min_healthy_rdonly_tablets', '1',
'test_keyspace/0'],
worker_rpc_port)
utils.wait_procs([workerclient_proc])
self.verify_reconciliation_counters(worker_port, 'Online', 'resharding1',
2, 1, 1)
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)
# check the startup values are in the right place
self._check_startup_values()
# check the schema too
utils.run_vtctl(['ValidateSchemaKeyspace', 'test_keyspace'], auto_log=True)
# check the binlog players are running
logging.debug('Waiting for binlog players to start on new masters...')
self.check_destination_master(shard_0_master, ['test_keyspace/0'])
self.check_destination_master(shard_1_master, ['test_keyspace/0'])
# check that binlog server exported the stats vars
self.check_binlog_server_vars(shard_replica, horizontal=True)
# testing filtered replication: insert a bunch of data on shard 1,
# check we get most of it after a few seconds, wait for binlog server
# timeout, check we get all of it.
logging.debug('Inserting lots of data on source shard')
self._insert_lots(1000)
logging.debug('Checking 80 percent of data is sent quickly')
v = self._check_lots_timeout(1000, 80, 5)
if v != 100:
logging.debug('Checking all data goes through eventually')
self._check_lots_timeout(1000, 100, 20)
logging.debug('Checking no data was sent the wrong way')
self._check_lots_not_present(1000)
self.check_binlog_player_vars(shard_0_master, ['test_keyspace/0'],
seconds_behind_master_max=30)
self.check_binlog_player_vars(shard_1_master, ['test_keyspace/0'],
seconds_behind_master_max=30)
self.check_binlog_server_vars(shard_replica, horizontal=True,
min_statements=1000, min_transactions=1000)
# use vtworker to compare the data
logging.debug('Running vtworker SplitDiff for -80')
for t in [shard_0_rdonly1, shard_1_rdonly1]:
utils.run_vtctl(['RunHealthCheck', t.tablet_alias])
utils.run_vtworker(['-cell', 'test_nj', 'SplitDiff',
'--min_healthy_rdonly_tablets', '1',
'test_keyspace/-80'],
auto_log=True)
logging.debug('Running vtworker SplitDiff for 80-')
utils.run_vtworker(['-cell', 'test_nj', 'SplitDiff',
'--min_healthy_rdonly_tablets', '1',
'test_keyspace/80-'],
auto_log=True)
utils.pause('Good time to test vtworker for diffs')
# get status for the destination master tablet, make sure we have it all
self.check_running_binlog_player(shard_0_master, 2000, 2000)
self.check_running_binlog_player(shard_1_master, 6000, 2000)
# check we can't migrate the master just yet
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/0', 'master'],
expect_fail=True)
# now serve rdonly from the split shards
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/0', 'rdonly'],
auto_log=True)
utils.check_srv_keyspace('test_nj', 'test_keyspace',
'Partitions(master): -\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
# make sure rdonly tablets are back to serving before hitting vtgate.
for t in [shard_0_rdonly1, shard_1_rdonly1]:
t.wait_for_vttablet_state('SERVING')
utils.vtgate.wait_for_endpoints('test_keyspace.-80.rdonly', 1)
utils.vtgate.wait_for_endpoints('test_keyspace.80-.rdonly', 1)
# check the Map Reduce API works correctly, should use ExecuteKeyRanges
# on both destination shards now.
# we ask for 2 splits to only have one per shard
sql = 'select id, msg from resharding1'
s = utils.vtgate.split_query(sql, 'test_keyspace', 2)
self.assertEqual(len(s), 2)
self.assertEqual(s[0]['key_range_part']['keyspace'], 'test_keyspace')
self.assertEqual(s[1]['key_range_part']['keyspace'], 'test_keyspace')
self.assertEqual(len(s[0]['key_range_part']['key_ranges']), 1)
self.assertEqual(len(s[1]['key_range_part']['key_ranges']), 1)
# then serve replica from the split shards
source_tablet = shard_replica
destination_tablets = [shard_0_replica, shard_1_replica]
utils.run_vtctl(
['MigrateServedTypes', 'test_keyspace/0', 'replica'], auto_log=True)
utils.check_srv_keyspace('test_nj', 'test_keyspace',
'Partitions(master): -\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
# move replica back and forth
utils.run_vtctl(
['MigrateServedTypes', '-reverse', 'test_keyspace/0', 'replica'],
auto_log=True)
# After a backwards migration, queryservice should be enabled on
# source and disabled on destinations
utils.check_tablet_query_service(self, source_tablet, True, False)
utils.check_tablet_query_services(self, destination_tablets, False, True)
utils.check_srv_keyspace('test_nj', 'test_keyspace',
'Partitions(master): -\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/0', 'replica'],
auto_log=True)
# After a forwards migration, queryservice should be disabled on
# source and enabled on destinations
utils.check_tablet_query_service(self, source_tablet, False, True)
utils.check_tablet_query_services(self, destination_tablets, True, False)
utils.check_srv_keyspace('test_nj', 'test_keyspace',
'Partitions(master): -\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
# then serve master from the split shards
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/0', 'master'],
auto_log=True)
utils.check_srv_keyspace('test_nj', 'test_keyspace',
'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
# check the binlog players are gone now
self.check_no_binlog_player(shard_0_master)
self.check_no_binlog_player(shard_1_master)
# make sure we can't delete a shard with tablets
utils.run_vtctl(['DeleteShard', 'test_keyspace/0'], expect_fail=True)
# remove the original tablets in the original shard
tablet.kill_tablets([shard_master, shard_replica, shard_rdonly1])
for t in [shard_replica, shard_rdonly1]:
utils.run_vtctl(['DeleteTablet', t.tablet_alias], auto_log=True)
utils.run_vtctl(['DeleteTablet', '-allow_master',
shard_master.tablet_alias], auto_log=True)
# rebuild the serving graph, all mentions of the old shards shoud be gone
utils.run_vtctl(['RebuildKeyspaceGraph', 'test_keyspace'], auto_log=True)
# delete the original shard
utils.run_vtctl(['DeleteShard', 'test_keyspace/0'], auto_log=True)
# kill everything else
tablet.kill_tablets([shard_0_master, shard_0_replica, shard_0_rdonly1,
shard_1_master, shard_1_replica, shard_1_rdonly1])
def verify_successful_worker_copy_with_reparent(self, mysql_down=False):
"""Verifies that vtworker can successfully copy data for a SplitClone.
Order of operations:
1. Run a background vtworker
2. Wait until the worker successfully resolves the destination masters.
3. Reparent the destination tablets
4. Wait until the vtworker copy is finished
5. Verify that the worker was forced to reresolve topology and retry writes
due to the reparent.
6. Verify that the data was copied successfully to both new shards
Args:
mysql_down: boolean. If True, we take down the MySQL instances on the
destination masters at first, then bring them back and reparent away.
Raises:
AssertionError if things didn't go as expected.
"""
if mysql_down:
logging.debug('Shutting down mysqld on destination masters.')
utils.wait_procs(
[shard_0_master.shutdown_mysql(),
shard_1_master.shutdown_mysql()])
worker_proc, worker_port, worker_rpc_port = utils.run_vtworker_bg(
['--cell', 'test_nj'],
auto_log=True)
workerclient_proc = utils.run_vtworker_client_bg(
['SplitClone',
'--source_reader_count', '1',
'--destination_pack_count', '1',
'--destination_writer_count', '1',
'test_keyspace/0'],
worker_rpc_port)
if mysql_down:
# If MySQL is down, we wait until resolving at least twice (to verify that
# we do reresolve and retry due to MySQL being down).
worker_vars = utils.poll_for_vars(
'vtworker', worker_port,
'WorkerDestinationActualResolves >= 2',
condition_fn=lambda v: v.get('WorkerDestinationActualResolves') >= 2)
self.assertNotEqual(
worker_vars['WorkerRetryCount'], {},
"expected vtworker to retry, but it didn't")
logging.debug('Worker has resolved at least twice, starting reparent now')
# Bring back masters. Since we test with semi-sync now, we need at least
# one replica for the new master. This test is already quite expensive,
# so we bring back the old master as a replica rather than having a third
# replica up the whole time.
logging.debug('Restarting mysqld on destination masters')
utils.wait_procs(
[shard_0_master.start_mysql(),
shard_1_master.start_mysql()])
# Reparent away from the old masters.
utils.run_vtctl(
['PlannedReparentShard', 'test_keyspace/-80',
shard_0_replica.tablet_alias], auto_log=True)
utils.run_vtctl(
['PlannedReparentShard', 'test_keyspace/80-',
shard_1_replica.tablet_alias], auto_log=True)
else:
# NOTE: There is a race condition around this:
# It's possible that the SplitClone vtworker command finishes before the
# PlannedReparentShard vtctl command, which we start below, succeeds.
# Then the test would fail because vtworker did not have to resolve the
# master tablet again (due to the missing reparent).
#
# To workaround this, the test takes a parameter to increase the number of
# rows that the worker has to copy (with the idea being to slow the worker
# down).
# You should choose a value for num_insert_rows, such that this test
# passes for your environment (trial-and-error...)
utils.poll_for_vars(
'vtworker', worker_port,
'WorkerDestinationActualResolves >= 1',
condition_fn=lambda v: v.get('WorkerDestinationActualResolves') >= 1)
logging.debug('Worker has resolved at least once, starting reparent now')
utils.run_vtctl(
['PlannedReparentShard', 'test_keyspace/-80',
shard_0_replica.tablet_alias], auto_log=True)
utils.run_vtctl(
['PlannedReparentShard', 'test_keyspace/80-',
shard_1_replica.tablet_alias], auto_log=True)
utils.wait_procs([workerclient_proc])
# Verify that we were forced to reresolve and retry.
worker_vars = utils.get_vars(worker_port)
self.assertGreater(worker_vars['WorkerDestinationActualResolves'], 1)
self.assertGreater(worker_vars['WorkerDestinationAttemptedResolves'], 1)
self.assertNotEqual(worker_vars['WorkerRetryCount'], {},
"expected vtworker to retry, but it didn't")
utils.kill_sub_process(worker_proc, soft=True)
# Make sure that everything is caught up to the same replication point
self.run_split_diff('test_keyspace/-80', all_shard_tablets, shard_0_tablets)
self.run_split_diff('test_keyspace/80-', all_shard_tablets, shard_1_tablets)
self.assert_shard_data_equal(0, shard_master, shard_0_tablets.replica)
self.assert_shard_data_equal(1, shard_master, shard_1_tablets.replica)
def test_merge_sharding(self):
utils.run_vtctl(['CreateKeyspace',
'--sharding_column_name', 'custom_ksid_col',
'--sharding_column_type', base_sharding.keyspace_id_type,
'test_keyspace'])
shard_0_master.init_tablet('replica', 'test_keyspace', '-40')
shard_0_replica.init_tablet('replica', 'test_keyspace', '-40')
shard_0_rdonly.init_tablet('rdonly', 'test_keyspace', '-40')
shard_1_master.init_tablet('replica', 'test_keyspace', '40-80')
shard_1_replica.init_tablet('replica', 'test_keyspace', '40-80')
shard_1_rdonly.init_tablet('rdonly', 'test_keyspace', '40-80')
shard_2_master.init_tablet('replica', 'test_keyspace', '80-')
shard_2_replica.init_tablet('replica', 'test_keyspace', '80-')
shard_2_rdonly.init_tablet('rdonly', 'test_keyspace', '80-')
# rebuild and check SrvKeyspace
utils.run_vtctl(['RebuildKeyspaceGraph', 'test_keyspace'], auto_log=True)
ks = utils.run_vtctl_json(['GetSrvKeyspace', 'test_nj', 'test_keyspace'])
self.assertEqual(ks['sharding_column_name'], 'custom_ksid_col')
# create databases so vttablet can start behaving normally
for t in [shard_0_master, shard_0_replica, shard_0_rdonly,
shard_1_master, shard_1_replica, shard_1_rdonly,
shard_2_master, shard_2_replica, shard_2_rdonly]:
t.create_db('vt_test_keyspace')
t.start_vttablet(wait_for_state=None,
binlog_use_v3_resharding_mode=False)
# won't be serving, no replication state
for t in [shard_0_master, shard_0_replica, shard_0_rdonly,
shard_1_master, shard_1_replica, shard_1_rdonly,
shard_2_master, shard_2_replica, shard_2_rdonly]:
t.wait_for_vttablet_state('NOT_SERVING')
# reparent to make the tablets work
utils.run_vtctl(['InitShardMaster', '-force', 'test_keyspace/-40',
shard_0_master.tablet_alias], auto_log=True)
utils.run_vtctl(['InitShardMaster', '-force', 'test_keyspace/40-80',
shard_1_master.tablet_alias], auto_log=True)
utils.run_vtctl(['InitShardMaster', '-force', 'test_keyspace/80-',
shard_2_master.tablet_alias], auto_log=True)
# create the tables
self._create_schema()
self._insert_startup_values()
# run a health check on source replicas so they respond to discovery
# (for binlog players) and on the source rdonlys (for workers)
for t in [shard_0_replica, shard_1_replica]:
utils.run_vtctl(['RunHealthCheck', t.tablet_alias])
for t in [shard_0_rdonly, shard_1_rdonly]:
utils.run_vtctl(['RunHealthCheck', t.tablet_alias])
# create the merge shards
shard_dest_master.init_tablet('replica', 'test_keyspace', '-80')
shard_dest_replica.init_tablet('replica', 'test_keyspace', '-80')
shard_dest_rdonly.init_tablet('rdonly', 'test_keyspace', '-80')
# start vttablet on the destination shard (no db created,
# so they're all not serving)
for t in [shard_dest_master, shard_dest_replica, shard_dest_rdonly]:
t.start_vttablet(wait_for_state=None,
binlog_use_v3_resharding_mode=False)
for t in [shard_dest_master, shard_dest_replica, shard_dest_rdonly]:
t.wait_for_vttablet_state('NOT_SERVING')
utils.run_vtctl(['InitShardMaster', '-force', 'test_keyspace/-80',
shard_dest_master.tablet_alias], auto_log=True)
utils.run_vtctl(['RebuildKeyspaceGraph', 'test_keyspace'],
auto_log=True)
utils.check_srv_keyspace(
'test_nj', 'test_keyspace',
'Partitions(master): -40 40-80 80-\n'
'Partitions(rdonly): -40 40-80 80-\n'
'Partitions(replica): -40 40-80 80-\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
# copy the schema
utils.run_vtctl(['CopySchemaShard', shard_0_rdonly.tablet_alias,
'test_keyspace/-80'], auto_log=True)
# copy the data (will also start filtered replication), reset source
# Run vtworker as daemon for the following SplitClone commands.
worker_proc, worker_port, worker_rpc_port = utils.run_vtworker_bg(
['--cell', 'test_nj', '--command_display_interval', '10ms',
'--use_v3_resharding_mode=false'],
auto_log=True)
# Initial clone (online).
workerclient_proc = utils.run_vtworker_client_bg(
['SplitClone',
'--offline=false',
'--chunk_count', '10',
'--min_rows_per_chunk', '1',
'--min_healthy_rdonly_tablets', '1',
'test_keyspace/-80'],
worker_rpc_port)
utils.wait_procs([workerclient_proc])
self.verify_reconciliation_counters(worker_port, 'Online', 'resharding1',
2, 0, 0, 0)
# Reset vtworker such that we can run the next command.
workerclient_proc = utils.run_vtworker_client_bg(['Reset'], worker_rpc_port)
utils.wait_procs([workerclient_proc])
# Modify the destination shard. SplitClone will revert the changes.
# Delete row 1 (provokes an insert).
shard_dest_master.mquery('vt_test_keyspace',
'delete from resharding1 where id=1', write=True)
# Update row 2 (provokes an update).
shard_dest_master.mquery(
'vt_test_keyspace', "update resharding1 set msg='msg-not-2' where id=2",
write=True)
# Insert row 0 (provokes a delete).
self._insert_value(shard_dest_master, 'resharding1', 0, 'msg0',
0x5000000000000000)
workerclient_proc = utils.run_vtworker_client_bg(
['SplitClone',
'--chunk_count', '10',
'--min_rows_per_chunk', '1',
'--min_healthy_rdonly_tablets', '1',
'test_keyspace/-80'],
worker_rpc_port)
utils.wait_procs([workerclient_proc])
# Change tablets, which were taken offline, back to rdonly.
utils.run_vtctl(['ChangeSlaveType', shard_0_rdonly.tablet_alias,
'rdonly'], auto_log=True)
utils.run_vtctl(['ChangeSlaveType', shard_1_rdonly.tablet_alias,
'rdonly'], auto_log=True)
self.verify_reconciliation_counters(worker_port, 'Online', 'resharding1',
1, 1, 1, 0)
self.verify_reconciliation_counters(worker_port, 'Offline', 'resharding1',
0, 0, 0, 2)
# Terminate worker daemon because it is no longer needed.
utils.kill_sub_process(worker_proc, soft=True)
# check the startup values are in the right place
self._check_startup_values()
# check the schema too
utils.run_vtctl(['ValidateSchemaKeyspace', 'test_keyspace'], auto_log=True)
# check binlog player variables
self.check_destination_master(shard_dest_master,
['test_keyspace/-40', 'test_keyspace/40-80'])
# check that binlog server exported the stats vars
self.check_binlog_server_vars(shard_0_replica, horizontal=True)
self.check_binlog_server_vars(shard_1_replica, horizontal=True)
# testing filtered replication: insert a bunch of data on shard 0 and 1,
# check we get most of it after a few seconds, wait for binlog server
# timeout, check we get all of it.
logging.debug('Inserting lots of data on source shards')
self._insert_lots(1000)
logging.debug('Checking 80 percent of data is sent quickly')
v = self._check_lots_timeout(1000, 80, 10)
if v != 100:
# small optimization: only do this check if we don't have all the data
# already anyway.
logging.debug('Checking all data goes through eventually')
self._check_lots_timeout(1000, 100, 30)
self.check_binlog_player_vars(shard_dest_master,
['test_keyspace/-40', 'test_keyspace/40-80'],
seconds_behind_master_max=30)
self.check_binlog_server_vars(shard_0_replica, horizontal=True,
min_statements=1000, min_transactions=1000)
self.check_binlog_server_vars(shard_1_replica, horizontal=True,
min_statements=1000, min_transactions=1000)
# use vtworker to compare the data (after health-checking the destination
# rdonly tablets so discovery works)
utils.run_vtctl(['RunHealthCheck', shard_dest_rdonly.tablet_alias])
logging.debug('Running vtworker SplitDiff on first half')
utils.run_vtworker(['-cell', 'test_nj',
'--use_v3_resharding_mode=false',
'SplitDiff',
'--exclude_tables', 'unrelated',
'--min_healthy_rdonly_tablets', '1',
'--source_uid', '0',
'test_keyspace/-80'],
auto_log=True)
utils.run_vtctl(['ChangeSlaveType', shard_0_rdonly.tablet_alias, 'rdonly'],
auto_log=True)
utils.run_vtctl(['ChangeSlaveType', shard_dest_rdonly.tablet_alias,
'rdonly'], auto_log=True)
logging.debug('Running vtworker SplitDiff on second half')
utils.run_vtworker(['-cell', 'test_nj',
'--use_v3_resharding_mode=false',
'SplitDiff',
'--exclude_tables', 'unrelated',
'--min_healthy_rdonly_tablets', '1',
'--source_uid', '1',
'test_keyspace/-80'],
auto_log=True)
utils.run_vtctl(['ChangeSlaveType', shard_1_rdonly.tablet_alias, 'rdonly'],
auto_log=True)
utils.run_vtctl(['ChangeSlaveType', shard_dest_rdonly.tablet_alias,
'rdonly'], auto_log=True)
# get status for the destination master tablet, make sure we have it all
self.check_running_binlog_player(shard_dest_master, 3000, 1000)
# check destination master query service is not running
utils.check_tablet_query_service(self, shard_dest_master, False, False)
stream_health = utils.run_vtctl_json(['VtTabletStreamHealth',
'-count', '1',
shard_dest_master.tablet_alias])
logging.debug('Got health: %s', str(stream_health))
self.assertIn('realtime_stats', stream_health)
self.assertNotIn('serving', stream_health)
# check the destination master 3 is healthy, even though its query
# service is not running (if not healthy this would exception out)
shard_dest_master.get_healthz()
# now serve rdonly from the split shards
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/-80', 'rdonly'],
auto_log=True)
utils.check_srv_keyspace('test_nj', 'test_keyspace',
'Partitions(master): -40 40-80 80-\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -40 40-80 80-\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
# now serve replica from the split shards
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/-80', 'replica'],
auto_log=True)
utils.check_srv_keyspace('test_nj', 'test_keyspace',
'Partitions(master): -40 40-80 80-\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
# now serve master from the split shards
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/-80', 'master'],
auto_log=True)
utils.check_srv_keyspace('test_nj', 'test_keyspace',
'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
utils.check_tablet_query_service(self, shard_0_master, False, True)
utils.check_tablet_query_service(self, shard_1_master, False, True)
# check the binlog players are gone now
self.check_no_binlog_player(shard_dest_master)
# kill the original tablets in the original shards
tablet.kill_tablets([shard_0_master, shard_0_replica, shard_0_rdonly,
shard_1_master, shard_1_replica, shard_1_rdonly])
for t in [shard_0_replica, shard_0_rdonly,
shard_1_replica, shard_1_rdonly]:
utils.run_vtctl(['DeleteTablet', t.tablet_alias], auto_log=True)
for t in [shard_0_master, shard_1_master]:
utils.run_vtctl(['DeleteTablet', '-allow_master', t.tablet_alias],
auto_log=True)
# delete the original shards
utils.run_vtctl(['DeleteShard', 'test_keyspace/-40'], auto_log=True)
utils.run_vtctl(['DeleteShard', 'test_keyspace/40-80'], auto_log=True)
# rebuild the serving graph, all mentions of the old shards shoud be gone
utils.run_vtctl(['RebuildKeyspaceGraph', 'test_keyspace'], auto_log=True)
# kill everything else
tablet.kill_tablets([shard_2_master, shard_2_replica, shard_2_rdonly,
shard_dest_master, shard_dest_replica,
shard_dest_rdonly])
def test_resharding(self):
# 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 verify_successful_worker_copy_with_reparent(self, mysql_down=False):
"""Verifies that vtworker can successfully copy data for a SplitClone.
Order of operations:
1. Run a background vtworker
2. Wait until the worker successfully resolves the destination masters.
3. Reparent the destination tablets
4. Wait until the vtworker copy is finished
5. Verify that the worker was forced to reresolve topology and retry writes
due to the reparent.
6. Verify that the data was copied successfully to both new shards
Args:
mysql_down: boolean. If True, we take down the MySQL instances on the
destination masters at first, then bring them back and reparent away.
Raises:
AssertionError if things didn't go as expected.
"""
if mysql_down:
logging.debug('Shutting down mysqld on destination masters.')
utils.wait_procs(
[shard_0_master.shutdown_mysql(),
shard_1_master.shutdown_mysql()])
worker_proc, worker_port, worker_rpc_port = utils.run_vtworker_bg(
['--cell', 'test_nj', '--use_v3_resharding_mode=false'],
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.
# --chunk_count is 2 because rows are currently ordered by primary key such
# that all rows of the first shard come first and then the second shard.
# TODO(mberlin): Remove --offline=false once vtworker ensures that the
# destination shards are not behind the master's replication
# position.
args = ['SplitClone',
'--offline=false',
'--destination_writer_count', '1',
'--min_healthy_rdonly_tablets', '1',
'--max_tps', '9999']
if not mysql_down:
# Make the clone as slow as necessary such that there is enough time to
# run PlannedReparent in the meantime.
# TODO(mberlin): Once insert_values is fixed to uniformly distribute the
# rows across shards when sorted by primary key, remove
# --chunk_count 2, --min_rows_per_chunk 1 and set
# --source_reader_count back to 1.
args.extend(['--source_reader_count', '2',
'--chunk_count', '2',
'--min_rows_per_chunk', '1',
'--write_query_max_rows', '1'])
args.append('test_keyspace/0')
workerclient_proc = utils.run_vtworker_client_bg(args, worker_rpc_port)
if mysql_down:
# If MySQL is down, we wait until vtworker retried at least once to make
# sure it reached the point where a write failed due to MySQL being down.
# There should be two retries at least, one for each destination shard.
utils.poll_for_vars(
'vtworker', worker_port,
'WorkerRetryCount >= 2',
condition_fn=lambda v: v.get('WorkerRetryCount') >= 2)
logging.debug('Worker has retried at least twice, starting reparent now')
# vtworker is blocked at this point. This is a good time to test that its
# throttler server is reacting to RPCs.
self.check_throttler_service('localhost:%d' % worker_rpc_port,
['test_keyspace/-80', 'test_keyspace/80-'],
9999)
# Bring back masters. Since we test with semi-sync now, we need at least
# one replica for the new master. This test is already quite expensive,
# so we bring back the old master as a replica rather than having a third
# replica up the whole time.
logging.debug('Restarting mysqld on destination masters')
utils.wait_procs(
[shard_0_master.start_mysql(),
shard_1_master.start_mysql()])
# Reparent away from the old masters.
utils.run_vtctl(
['PlannedReparentShard', '-keyspace_shard', 'test_keyspace/-80',
'-new_master', shard_0_replica.tablet_alias], auto_log=True)
utils.run_vtctl(
['PlannedReparentShard', '-keyspace_shard', 'test_keyspace/80-',
'-new_master', shard_1_replica.tablet_alias], auto_log=True)
else:
# NOTE: There is a race condition around this:
# It's possible that the SplitClone vtworker command finishes before the
# PlannedReparentShard vtctl command, which we start below, succeeds.
# Then the test would fail because vtworker did not have to retry.
#
# To workaround this, the test takes a parameter to increase the number of
# rows that the worker has to copy (with the idea being to slow the worker
# down).
# You should choose a value for num_insert_rows, such that this test
# passes for your environment (trial-and-error...)
# Make sure that vtworker got past the point where it picked a master
# for each destination shard ("finding targets" state).
utils.poll_for_vars(
'vtworker', worker_port,
'WorkerState == cloning the data (online)',
condition_fn=lambda v: v.get('WorkerState') == 'cloning the'
' data (online)')
logging.debug('Worker is in copy state, starting reparent now')
utils.run_vtctl(
['PlannedReparentShard', '-keyspace_shard', 'test_keyspace/-80',
'-new_master', shard_0_replica.tablet_alias], auto_log=True)
utils.run_vtctl(
['PlannedReparentShard', '-keyspace_shard', 'test_keyspace/80-',
'-new_master', shard_1_replica.tablet_alias], auto_log=True)
utils.wait_procs([workerclient_proc])
# Verify that we were forced to re-resolve and retry.
worker_vars = utils.get_vars(worker_port)
self.assertGreater(worker_vars['WorkerRetryCount'], 1,
"expected vtworker to retry each of the two reparented"
" destination masters at least once, but it didn't")
self.assertNotEqual(worker_vars['WorkerRetryCount'], {},
"expected vtworker to retry, but it didn't")
utils.kill_sub_process(worker_proc, soft=True)
# Wait for the destination RDONLYs to catch up or the following offline
# clone will try to insert rows which already exist.
# TODO(mberlin): Remove this once SplitClone supports it natively.
utils.wait_for_replication_pos(shard_0_replica, shard_0_rdonly1)
utils.wait_for_replication_pos(shard_1_replica, shard_1_rdonly1)
# Run final offline clone to enable filtered replication.
_, _ = utils.run_vtworker(['-cell', 'test_nj',
'--use_v3_resharding_mode=false',
'SplitClone',
'--online=false',
'--min_healthy_rdonly_tablets', '1',
'test_keyspace/0'], auto_log=True)
# Make sure that everything is caught up to the same replication point
self.run_split_diff('test_keyspace/-80', all_shard_tablets, shard_0_tablets)
self.run_split_diff('test_keyspace/80-', all_shard_tablets, shard_1_tablets)
self.assert_shard_data_equal(0, shard_master, shard_0_tablets.replica)
self.assert_shard_data_equal(1, shard_master, shard_1_tablets.replica)
def verify_successful_worker_copy_with_reparent(self, mysql_down=False):
"""Verifies that vtworker can successfully copy data for a SplitClone.
Order of operations:
1. Run a background vtworker
2. Wait until the worker successfully resolves the destination masters.
3. Reparent the destination tablets
4. Wait until the vtworker copy is finished
5. Verify that the worker was forced to reresolve topology and retry writes
due to the reparent.
6. Verify that the data was copied successfully to both new shards
Args:
mysql_down: boolean. If True, we take down the MySQL instances on the
destination masters at first, then bring them back and reparent away.
Raises:
AssertionError if things didn't go as expected.
"""
if mysql_down:
logging.debug('Shutting down mysqld on destination masters.')
utils.wait_procs(
[shard_0_master.shutdown_mysql(),
shard_1_master.shutdown_mysql()])
worker_proc, worker_port, worker_rpc_port = utils.run_vtworker_bg(
['--cell', 'test_nj'],
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.
workerclient_proc = utils.run_vtworker_client_bg(
['SplitClone',
'--source_reader_count', '1',
'--destination_pack_count', '1',
'--destination_writer_count', '1',
'--min_healthy_rdonly_tablets', '1',
'--max_tps', '9999',
'test_keyspace/0'],
worker_rpc_port)
if mysql_down:
# If MySQL is down, we wait until vtworker retried at least once to make
# sure it reached the point where a write failed due to MySQL being down.
# There should be two retries at least, one for each destination shard.
utils.poll_for_vars(
'vtworker', worker_port,
'WorkerRetryCount >= 2',
condition_fn=lambda v: v.get('WorkerRetryCount') >= 2)
logging.debug('Worker has retried at least twice, starting reparent now')
# vtworker is blocked at this point. This is a good time to test that its
# throttler server is reacting to RPCs.
self.check_binlog_throttler('localhost:%d' % worker_rpc_port,
['test_keyspace/-80', 'test_keyspace/80-'],
9999)
# Bring back masters. Since we test with semi-sync now, we need at least
# one replica for the new master. This test is already quite expensive,
# so we bring back the old master as a replica rather than having a third
# replica up the whole time.
logging.debug('Restarting mysqld on destination masters')
utils.wait_procs(
[shard_0_master.start_mysql(),
shard_1_master.start_mysql()])
# Reparent away from the old masters.
utils.run_vtctl(
['PlannedReparentShard', 'test_keyspace/-80',
shard_0_replica.tablet_alias], auto_log=True)
utils.run_vtctl(
['PlannedReparentShard', 'test_keyspace/80-',
shard_1_replica.tablet_alias], auto_log=True)
else:
# NOTE: There is a race condition around this:
# It's possible that the SplitClone vtworker command finishes before the
# PlannedReparentShard vtctl command, which we start below, succeeds.
# Then the test would fail because vtworker did not have to retry.
#
# To workaround this, the test takes a parameter to increase the number of
# rows that the worker has to copy (with the idea being to slow the worker
# down).
# You should choose a value for num_insert_rows, such that this test
# passes for your environment (trial-and-error...)
# Make sure that vtworker got past the point where it picked a master
# for each destination shard ("finding targets" state).
utils.poll_for_vars(
'vtworker', worker_port,
'WorkerState == copying the data',
condition_fn=lambda v: v.get('WorkerState') == 'copying the data')
logging.debug('Worker is in copy state, starting reparent now')
utils.run_vtctl(
['PlannedReparentShard', 'test_keyspace/-80',
shard_0_replica.tablet_alias], auto_log=True)
utils.run_vtctl(
['PlannedReparentShard', 'test_keyspace/80-',
shard_1_replica.tablet_alias], auto_log=True)
utils.wait_procs([workerclient_proc])
# Verify that we were forced to re-resolve and retry.
worker_vars = utils.get_vars(worker_port)
# There should be two retries at least, one for each destination shard.
self.assertGreater(worker_vars['WorkerRetryCount'], 1)
self.assertNotEqual(worker_vars['WorkerRetryCount'], {},
"expected vtworker to retry, but it didn't")
utils.kill_sub_process(worker_proc, soft=True)
# Make sure that everything is caught up to the same replication point
self.run_split_diff('test_keyspace/-80', all_shard_tablets, shard_0_tablets)
self.run_split_diff('test_keyspace/80-', all_shard_tablets, shard_1_tablets)
self.assert_shard_data_equal(0, shard_master, shard_0_tablets.replica)
self.assert_shard_data_equal(1, shard_master, shard_1_tablets.replica)
def verify_successful_worker_copy_with_reparent(self, mysql_down=False):
"""Verifies that vtworker can successfully copy data for a SplitClone.
Order of operations:
1. Run a background vtworker
2. Wait until the worker successfully resolves the destination masters.
3. Reparent the destination tablets
4. Wait until the vtworker copy is finished
5. Verify that the worker was forced to reresolve topology and retry writes
due to the reparent.
6. Verify that the data was copied successfully to both new shards
Args:
mysql_down: boolean. If True, we take down the MySQL instances on the
destination masters at first, then bring them back and reparent away.
Raises:
AssertionError if things didn't go as expected.
"""
if mysql_down:
logging.debug('Shutting down mysqld on destination masters.')
utils.wait_procs([
shard_0_master.shutdown_mysql(),
shard_1_master.shutdown_mysql()
])
worker_proc, worker_port, worker_rpc_port = utils.run_vtworker_bg(
['--cell', 'test_nj', '--use_v3_resharding_mode=false'],
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.
# --chunk_count is 2 because rows are currently ordered by primary key such
# that all rows of the first shard come first and then the second shard.
# TODO(mberlin): Remove --offline=false once vtworker ensures that the
# destination shards are not behind the master's replication
# position.
args = [
'SplitClone', '--offline=false', '--destination_writer_count', '1',
'--min_healthy_rdonly_tablets', '1', '--max_tps', '9999'
]
if not mysql_down:
# Make the clone as slow as necessary such that there is enough time to
# run PlannedReparent in the meantime.
# TODO(mberlin): Once insert_values is fixed to uniformly distribute the
# rows across shards when sorted by primary key, remove
# --chunk_count 2, --min_rows_per_chunk 1 and set
# --source_reader_count back to 1.
args.extend([
'--source_reader_count', '2', '--chunk_count', '2',
'--min_rows_per_chunk', '1', '--write_query_max_rows', '1'
])
args.append('test_keyspace/0')
workerclient_proc = utils.run_vtworker_client_bg(args, worker_rpc_port)
if mysql_down:
# If MySQL is down, we wait until vtworker retried at least once to make
# sure it reached the point where a write failed due to MySQL being down.
# There should be two retries at least, one for each destination shard.
utils.poll_for_vars(
'vtworker',
worker_port,
'WorkerRetryCount >= 2',
condition_fn=lambda v: v.get('WorkerRetryCount') >= 2)
logging.debug(
'Worker has retried at least twice, starting reparent now')
# vtworker is blocked at this point. This is a good time to test that its
# throttler server is reacting to RPCs.
self.check_throttler_service(
'localhost:%d' % worker_rpc_port,
['test_keyspace/-80', 'test_keyspace/80-'], 9999)
# Bring back masters. Since we test with semi-sync now, we need at least
# one replica for the new master. This test is already quite expensive,
# so we bring back the old master as a replica rather than having a third
# replica up the whole time.
logging.debug('Restarting mysqld on destination masters')
utils.wait_procs(
[shard_0_master.start_mysql(),
shard_1_master.start_mysql()])
# Reparent away from the old masters.
utils.run_vtctl([
'PlannedReparentShard', '-keyspace_shard', 'test_keyspace/-80',
'-new_master', shard_0_replica.tablet_alias
],
auto_log=True)
utils.run_vtctl([
'PlannedReparentShard', '-keyspace_shard', 'test_keyspace/80-',
'-new_master', shard_1_replica.tablet_alias
],
auto_log=True)
else:
# NOTE: There is a race condition around this:
# It's possible that the SplitClone vtworker command finishes before the
# PlannedReparentShard vtctl command, which we start below, succeeds.
# Then the test would fail because vtworker did not have to retry.
#
# To workaround this, the test takes a parameter to increase the number of
# rows that the worker has to copy (with the idea being to slow the worker
# down).
# You should choose a value for num_insert_rows, such that this test
# passes for your environment (trial-and-error...)
# Make sure that vtworker got past the point where it picked a master
# for each destination shard ("finding targets" state).
utils.poll_for_vars(
'vtworker',
worker_port,
'WorkerState == cloning the data (online)',
condition_fn=lambda v: v.get('WorkerState') == 'cloning the'
' data (online)')
logging.debug('Worker is in copy state, starting reparent now')
utils.run_vtctl([
'PlannedReparentShard', '-keyspace_shard', 'test_keyspace/-80',
'-new_master', shard_0_replica.tablet_alias
],
auto_log=True)
utils.run_vtctl([
'PlannedReparentShard', '-keyspace_shard', 'test_keyspace/80-',
'-new_master', shard_1_replica.tablet_alias
],
auto_log=True)
utils.wait_procs([workerclient_proc])
# Verify that we were forced to re-resolve and retry.
worker_vars = utils.get_vars(worker_port)
self.assertGreater(
worker_vars['WorkerRetryCount'], 1,
"expected vtworker to retry each of the two reparented"
" destination masters at least once, but it didn't")
self.assertNotEqual(worker_vars['WorkerRetryCount'], {},
"expected vtworker to retry, but it didn't")
utils.kill_sub_process(worker_proc, soft=True)
# Wait for the destination RDONLYs to catch up or the following offline
# clone will try to insert rows which already exist.
# TODO(mberlin): Remove this once SplitClone supports it natively.
utils.wait_for_replication_pos(shard_0_replica, shard_0_rdonly1)
utils.wait_for_replication_pos(shard_1_replica, shard_1_rdonly1)
# Run final offline clone to enable filtered replication.
_, _ = utils.run_vtworker([
'-cell', 'test_nj', '--use_v3_resharding_mode=false', 'SplitClone',
'--online=false', '--min_healthy_rdonly_tablets', '1',
'test_keyspace/0'
],
auto_log=True)
# Make sure that everything is caught up to the same replication point
self.run_split_diff('test_keyspace/-80', all_shard_tablets,
shard_0_tablets)
self.run_split_diff('test_keyspace/80-', all_shard_tablets,
shard_1_tablets)
self.assert_shard_data_equal(0, shard_master, shard_0_tablets.replica)
self.assert_shard_data_equal(1, shard_master, shard_1_tablets.replica)
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('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 = (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, 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_2_rdonly1.init_tablet('rdonly', '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_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', '-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=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-'])
# When the binlog players/filtered replication is turned on, the query
# service must be turned off on the destination masters.
# The tested behavior is a safeguard to prevent that somebody can
# accidentally modify data on the destination masters while they are not
# migrated yet and the source shards are still the source of truth.
shard_2_master.wait_for_vttablet_state('NOT_SERVING')
shard_3_master.wait_for_vttablet_state('NOT_SERVING')
# 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',
'-keyspace_shard', 'test_keyspace/80-c0',
'-new_master', 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)
# make sure we can't delete the destination shard now that it's serving
_, stderr = utils.run_vtctl(['DeleteShard', 'test_keyspace/80-c0'],
expect_fail=True)
self.assertIn('is still serving, cannot delete it', stderr)
# 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):
global l2vtgate1, l2vtgate2
# create the keyspace with just one shard
shard_master.init_tablet('replica',
keyspace='test_keyspace',
shard='0',
tablet_index=0)
shard_replica.init_tablet('replica',
keyspace='test_keyspace',
shard='0',
tablet_index=1)
shard_rdonly1.init_tablet('rdonly',
keyspace='test_keyspace',
shard='0',
tablet_index=2)
for t in [shard_master, shard_replica, shard_rdonly1]:
t.create_db('vt_test_keyspace')
shard_master.start_vttablet(wait_for_state=None,
binlog_use_v3_resharding_mode=False)
shard_replica.start_vttablet(wait_for_state=None,
binlog_use_v3_resharding_mode=False)
shard_rdonly1.start_vttablet(wait_for_state=None,
binlog_use_v3_resharding_mode=False)
for t in [shard_master, shard_replica, shard_rdonly1]:
t.wait_for_vttablet_state('NOT_SERVING')
# reparent to make the tablets work
utils.run_vtctl([
'InitShardMaster', '-force', 'test_keyspace/0',
shard_master.tablet_alias
],
auto_log=True)
utils.wait_for_tablet_type(shard_replica.tablet_alias, 'replica')
utils.wait_for_tablet_type(shard_rdonly1.tablet_alias, 'rdonly')
for t in [shard_master, shard_replica, shard_rdonly1]:
t.wait_for_vttablet_state('SERVING')
# create the tables and add startup values
self._create_schema()
self._insert_startup_values()
# reload schema on all tablets so we can query them
for t in [shard_master, shard_replica, shard_rdonly1]:
utils.run_vtctl(['ReloadSchema', t.tablet_alias], auto_log=True)
# We must start vtgate after tablets are up, or else wait until 1min refresh
# (that is the tablet_refresh_interval parameter for discovery gateway)
# we want cache_ttl at zero so we re-read the topology for every test query.
if use_l2vtgate:
l2vtgate1 = utils.VtGate()
l2vtgate1.start(
extra_args=['--enable_forwarding'],
tablets=[shard_master, shard_replica, shard_rdonly1])
l2vtgate1.wait_for_endpoints('test_keyspace.0.master', 1)
l2vtgate1.wait_for_endpoints('test_keyspace.0.replica', 1)
l2vtgate1.wait_for_endpoints('test_keyspace.0.rdonly', 1)
_, l2vtgate1_addr = l2vtgate1.rpc_endpoint()
# Clear utils.vtgate, so it doesn't point to the previous l2vtgate1.
utils.vtgate = None
utils.VtGate().start(cache_ttl='0',
l2vtgates=[
l2vtgate1_addr,
],
extra_args=['-disable_local_gateway'])
utils.vtgate.wait_for_endpoints('test_keyspace.0.master',
1,
var='L2VtgateConnections')
utils.vtgate.wait_for_endpoints('test_keyspace.0.replica',
1,
var='L2VtgateConnections')
utils.vtgate.wait_for_endpoints('test_keyspace.0.rdonly',
1,
var='L2VtgateConnections')
else:
utils.VtGate().start(
cache_ttl='0',
tablets=[shard_master, shard_replica, shard_rdonly1])
utils.vtgate.wait_for_endpoints('test_keyspace.0.master', 1)
utils.vtgate.wait_for_endpoints('test_keyspace.0.replica', 1)
utils.vtgate.wait_for_endpoints('test_keyspace.0.rdonly', 1)
# check the Map Reduce API works correctly, should use ExecuteShards,
# as we're not sharded yet.
# we have 3 values in the database, asking for 4 splits will get us
# a single query.
sql = 'select id, msg from resharding1'
s = utils.vtgate.split_query(sql, 'test_keyspace', 4)
self.assertEqual(len(s), 1)
self.assertEqual(s[0]['shard_part']['shards'][0], '0')
# change the schema, backfill keyspace_id, and change schema again
self._add_sharding_key_to_schema()
self._backfill_keyspace_id(shard_master)
self._mark_sharding_key_not_null()
# now we can be a sharded keyspace (and propagate to SrvKeyspace)
utils.run_vtctl([
'SetKeyspaceShardingInfo', 'test_keyspace', 'custom_ksid_col',
base_sharding.keyspace_id_type
])
utils.run_vtctl(['RebuildKeyspaceGraph', 'test_keyspace'],
auto_log=True)
# run a health check on source replica so it responds to discovery
utils.run_vtctl(['RunHealthCheck', shard_replica.tablet_alias])
# create the split shards
shard_0_master.init_tablet('replica',
keyspace='test_keyspace',
shard='-80',
tablet_index=0)
shard_0_replica.init_tablet('replica',
keyspace='test_keyspace',
shard='-80',
tablet_index=1)
shard_0_rdonly1.init_tablet('rdonly',
keyspace='test_keyspace',
shard='-80',
tablet_index=2)
shard_1_master.init_tablet('replica',
keyspace='test_keyspace',
shard='80-',
tablet_index=0)
shard_1_replica.init_tablet('replica',
keyspace='test_keyspace',
shard='80-',
tablet_index=1)
shard_1_rdonly1.init_tablet('rdonly',
keyspace='test_keyspace',
shard='80-',
tablet_index=2)
for t in [
shard_0_master, shard_0_replica, shard_0_rdonly1,
shard_1_master, shard_1_replica, shard_1_rdonly1
]:
t.create_db('vt_test_keyspace')
t.start_vttablet(wait_for_state=None,
binlog_use_v3_resharding_mode=False)
for t in [
shard_0_master, shard_0_replica, shard_0_rdonly1,
shard_1_master, shard_1_replica, shard_1_rdonly1
]:
t.wait_for_vttablet_state('NOT_SERVING')
utils.run_vtctl([
'InitShardMaster', '-force', 'test_keyspace/-80',
shard_0_master.tablet_alias
],
auto_log=True)
utils.run_vtctl([
'InitShardMaster', '-force', 'test_keyspace/80-',
shard_1_master.tablet_alias
],
auto_log=True)
for t in [shard_0_replica, shard_1_replica]:
utils.wait_for_tablet_type(t.tablet_alias, 'replica')
for t in [shard_0_rdonly1, shard_1_rdonly1]:
utils.wait_for_tablet_type(t.tablet_alias, 'rdonly')
sharded_tablets = [
shard_0_master, shard_0_replica, shard_0_rdonly1, shard_1_master,
shard_1_replica, shard_1_rdonly1
]
for t in sharded_tablets:
t.wait_for_vttablet_state('SERVING')
# must restart vtgate after tablets are up, or else wait until 1min refresh
# we want cache_ttl at zero so we re-read the topology for every test query.
utils.vtgate.kill()
if use_l2vtgate:
l2vtgate1.kill()
l2vtgate1 = utils.VtGate()
l2vtgate1.start(extra_args=[
'--enable_forwarding', '-tablet_filters',
'test_keyspace|0,test_keyspace|-80'
],
tablets=[
shard_master, shard_replica, shard_rdonly1,
shard_0_master, shard_0_replica,
shard_0_rdonly1
])
l2vtgate1.wait_for_endpoints('test_keyspace.0.master', 1)
l2vtgate1.wait_for_endpoints('test_keyspace.0.replica', 1)
l2vtgate1.wait_for_endpoints('test_keyspace.0.rdonly', 1)
l2vtgate1.wait_for_endpoints('test_keyspace.-80.master', 1)
l2vtgate1.wait_for_endpoints('test_keyspace.-80.replica', 1)
l2vtgate1.wait_for_endpoints('test_keyspace.-80.rdonly', 1)
l2vtgate1.verify_no_endpoint('test_keyspace.80-.master')
l2vtgate1.verify_no_endpoint('test_keyspace.80-.replica')
l2vtgate1.verify_no_endpoint('test_keyspace.80-.rdonly')
# FIXME(alainjobart) we clear tablet_types_to_wait, as this
# l2vtgate2 doesn't serve the current test_keyspace shard, which
# is test_keyspace.0. This is not ideal, we should re-work
# which keyspace/shard a l2vtgate can wait for, as the ones
# filtered by tablet_filters.
l2vtgate2 = utils.VtGate()
l2vtgate2.start(
extra_args=[
'--enable_forwarding', '-tablet_filters',
'test_keyspace|80-'
],
tablets=[shard_1_master, shard_1_replica, shard_1_rdonly1],
tablet_types_to_wait='')
l2vtgate2.wait_for_endpoints('test_keyspace.80-.master', 1)
l2vtgate2.wait_for_endpoints('test_keyspace.80-.replica', 1)
l2vtgate2.wait_for_endpoints('test_keyspace.80-.rdonly', 1)
l2vtgate2.verify_no_endpoint('test_keyspace.0.master')
l2vtgate2.verify_no_endpoint('test_keyspace.0.replica')
l2vtgate2.verify_no_endpoint('test_keyspace.0.rdonly')
l2vtgate2.verify_no_endpoint('test_keyspace.-80.master')
l2vtgate2.verify_no_endpoint('test_keyspace.-80.replica')
l2vtgate2.verify_no_endpoint('test_keyspace.-80.rdonly')
_, l2vtgate1_addr = l2vtgate1.rpc_endpoint()
_, l2vtgate2_addr = l2vtgate2.rpc_endpoint()
utils.vtgate = None
utils.VtGate().start(cache_ttl='0',
l2vtgates=[
l2vtgate1_addr,
l2vtgate2_addr,
],
extra_args=['-disable_local_gateway'])
var = 'L2VtgateConnections'
else:
utils.vtgate = None
utils.VtGate().start(cache_ttl='0',
tablets=[
shard_master, shard_replica,
shard_rdonly1, shard_0_master,
shard_0_replica, shard_0_rdonly1,
shard_1_master, shard_1_replica,
shard_1_rdonly1
])
var = None
# Wait for the endpoints, either local or remote.
utils.vtgate.wait_for_endpoints('test_keyspace.0.master', 1, var=var)
utils.vtgate.wait_for_endpoints('test_keyspace.0.replica', 1, var=var)
utils.vtgate.wait_for_endpoints('test_keyspace.0.rdonly', 1, var=var)
utils.vtgate.wait_for_endpoints('test_keyspace.-80.master', 1, var=var)
utils.vtgate.wait_for_endpoints('test_keyspace.-80.replica',
1,
var=var)
utils.vtgate.wait_for_endpoints('test_keyspace.-80.rdonly', 1, var=var)
utils.vtgate.wait_for_endpoints('test_keyspace.80-.master', 1, var=var)
utils.vtgate.wait_for_endpoints('test_keyspace.80-.replica',
1,
var=var)
utils.vtgate.wait_for_endpoints('test_keyspace.80-.rdonly', 1, var=var)
# check the Map Reduce API works correctly, should use ExecuteKeyRanges now,
# as we are sharded (with just one shard).
# again, we have 3 values in the database, asking for 4 splits will get us
# a single query.
sql = 'select id, msg from resharding1'
s = utils.vtgate.split_query(sql, 'test_keyspace', 4)
self.assertEqual(len(s), 1)
self.assertEqual(s[0]['key_range_part']['keyspace'], 'test_keyspace')
# There must be one empty KeyRange which represents the full keyspace.
self.assertEqual(len(s[0]['key_range_part']['key_ranges']), 1)
self.assertEqual(s[0]['key_range_part']['key_ranges'][0], {})
utils.check_srv_keyspace(
'test_nj',
'test_keyspace', 'Partitions(master): -\n'
'Partitions(rdonly): -\n'
'Partitions(replica): -\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
# we need to create the schema, and the worker will do data copying
for keyspace_shard in ('test_keyspace/-80', 'test_keyspace/80-'):
utils.run_vtctl([
'CopySchemaShard', '--exclude_tables', 'unrelated',
shard_rdonly1.tablet_alias, keyspace_shard
],
auto_log=True)
utils.run_vtctl(['RunHealthCheck', shard_rdonly1.tablet_alias])
# Run vtworker as daemon for the following SplitClone commands.
worker_proc, worker_port, worker_rpc_port = utils.run_vtworker_bg(
[
'--cell', 'test_nj', '--command_display_interval', '10ms',
'--use_v3_resharding_mode=false'
],
auto_log=True)
# Initial clone (online).
workerclient_proc = utils.run_vtworker_client_bg([
'SplitClone', '--offline=false', '--exclude_tables', 'unrelated',
'--chunk_count', '10', '--min_rows_per_chunk', '1',
'--min_healthy_rdonly_tablets', '1', 'test_keyspace/0'
], worker_rpc_port)
utils.wait_procs([workerclient_proc])
self.verify_reconciliation_counters(worker_port, 'Online',
'resharding1', 3, 0, 0, 0)
# Reset vtworker such that we can run the next command.
workerclient_proc = utils.run_vtworker_client_bg(['Reset'],
worker_rpc_port)
utils.wait_procs([workerclient_proc])
# Modify the destination shard. SplitClone will revert the changes.
# Delete row 1 (provokes an insert).
shard_0_master.mquery('vt_test_keyspace',
'delete from resharding1 where id=1',
write=True)
# Delete row 2 (provokes an insert).
shard_1_master.mquery('vt_test_keyspace',
'delete from resharding1 where id=2',
write=True)
# Update row 3 (provokes an update).
shard_1_master.mquery(
'vt_test_keyspace',
"update resharding1 set msg='msg-not-3' where id=3",
write=True)
# Insert row 4 (provokes a delete).
self._insert_value(shard_1_master, 'resharding1', 4, 'msg4',
0xD000000000000000)
workerclient_proc = utils.run_vtworker_client_bg([
'SplitClone', '--exclude_tables', 'unrelated', '--chunk_count',
'10', '--min_rows_per_chunk', '1', '--min_healthy_rdonly_tablets',
'1', 'test_keyspace/0'
], worker_rpc_port)
utils.wait_procs([workerclient_proc])
self.verify_reconciliation_counters(worker_port, 'Online',
'resharding1', 2, 1, 1, 0)
self.verify_reconciliation_counters(worker_port, 'Offline',
'resharding1', 0, 0, 0, 3)
# Terminate worker daemon because it is no longer needed.
utils.kill_sub_process(worker_proc, soft=True)
# check the startup values are in the right place
self._check_startup_values()
# check the schema too
utils.run_vtctl(['ValidateSchemaKeyspace', 'test_keyspace'],
auto_log=True)
# check the binlog players are running
logging.debug('Waiting for binlog players to start on new masters...')
self.check_destination_master(shard_0_master, ['test_keyspace/0'])
self.check_destination_master(shard_1_master, ['test_keyspace/0'])
# check that binlog server exported the stats vars
self.check_binlog_server_vars(shard_replica, horizontal=True)
# testing filtered replication: insert a bunch of data on shard 1,
# check we get most of it after a few seconds, wait for binlog server
# timeout, check we get all of it.
logging.debug('Inserting lots of data on source shard')
self._insert_lots(1000)
logging.debug('Checking 80 percent of data is sent quickly')
v = self._check_lots_timeout(1000, 80, 5)
if v != 100:
logging.debug('Checking all data goes through eventually')
self._check_lots_timeout(1000, 100, 20)
logging.debug('Checking no data was sent the wrong way')
self._check_lots_not_present(1000)
self.check_binlog_player_vars(shard_0_master, ['test_keyspace/0'],
seconds_behind_master_max=30)
self.check_binlog_player_vars(shard_1_master, ['test_keyspace/0'],
seconds_behind_master_max=30)
self.check_binlog_server_vars(shard_replica,
horizontal=True,
min_statements=1000,
min_transactions=1000)
# use vtworker to compare the data
logging.debug('Running vtworker SplitDiff for -80')
for t in [shard_0_rdonly1, shard_1_rdonly1]:
utils.run_vtctl(['RunHealthCheck', t.tablet_alias])
utils.run_vtworker([
'-cell', 'test_nj', '--use_v3_resharding_mode=false', 'SplitDiff',
'--min_healthy_rdonly_tablets', '1', 'test_keyspace/-80'
],
auto_log=True)
logging.debug('Running vtworker SplitDiff for 80-')
utils.run_vtworker([
'-cell', 'test_nj', '--use_v3_resharding_mode=false', 'SplitDiff',
'--min_healthy_rdonly_tablets', '1', 'test_keyspace/80-'
],
auto_log=True)
utils.pause('Good time to test vtworker for diffs')
# get status for the destination master tablet, make sure we have it all
self.check_running_binlog_player(shard_0_master, 2000, 2000)
self.check_running_binlog_player(shard_1_master, 6000, 2000)
# check we can't migrate the master just yet
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/0', 'master'],
expect_fail=True)
# now serve rdonly from the split shards
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/0', 'rdonly'],
auto_log=True)
utils.check_srv_keyspace(
'test_nj',
'test_keyspace', 'Partitions(master): -\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
# make sure rdonly tablets are back to serving before hitting vtgate.
for t in [shard_0_rdonly1, shard_1_rdonly1]:
t.wait_for_vttablet_state('SERVING')
if use_l2vtgate:
l2vtgate1.wait_for_endpoints('test_keyspace.-80.rdonly', 1)
l2vtgate2.wait_for_endpoints('test_keyspace.80-.rdonly', 1)
else:
utils.vtgate.wait_for_endpoints('test_keyspace.-80.rdonly', 1)
utils.vtgate.wait_for_endpoints('test_keyspace.80-.rdonly', 1)
# check the Map Reduce API works correctly, should use ExecuteKeyRanges
# on both destination shards now.
# we ask for 2 splits to only have one per shard
sql = 'select id, msg from resharding1'
s = utils.vtgate.split_query(sql, 'test_keyspace', 2)
self.assertEqual(len(s), 2)
self.assertEqual(s[0]['key_range_part']['keyspace'], 'test_keyspace')
self.assertEqual(s[1]['key_range_part']['keyspace'], 'test_keyspace')
self.assertEqual(len(s[0]['key_range_part']['key_ranges']), 1)
self.assertEqual(len(s[1]['key_range_part']['key_ranges']), 1)
# then serve replica from the split shards
source_tablet = shard_replica
destination_tablets = [shard_0_replica, shard_1_replica]
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/0', 'replica'],
auto_log=True)
utils.check_srv_keyspace(
'test_nj',
'test_keyspace', 'Partitions(master): -\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
# move replica back and forth
utils.run_vtctl(
['MigrateServedTypes', '-reverse', 'test_keyspace/0', 'replica'],
auto_log=True)
# After a backwards migration, queryservice should be enabled on
# source and disabled on destinations
utils.check_tablet_query_service(self, source_tablet, True, False)
utils.check_tablet_query_services(self, destination_tablets, False,
True)
utils.check_srv_keyspace(
'test_nj',
'test_keyspace', 'Partitions(master): -\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/0', 'replica'],
auto_log=True)
# After a forwards migration, queryservice should be disabled on
# source and enabled on destinations
utils.check_tablet_query_service(self, source_tablet, False, True)
utils.check_tablet_query_services(self, destination_tablets, True,
False)
utils.check_srv_keyspace(
'test_nj',
'test_keyspace', 'Partitions(master): -\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
# then serve master from the split shards
utils.run_vtctl(['MigrateServedTypes', 'test_keyspace/0', 'master'],
auto_log=True)
utils.check_srv_keyspace(
'test_nj',
'test_keyspace', 'Partitions(master): -80 80-\n'
'Partitions(rdonly): -80 80-\n'
'Partitions(replica): -80 80-\n',
keyspace_id_type=base_sharding.keyspace_id_type,
sharding_column_name='custom_ksid_col')
# check the binlog players are gone now
self.check_no_binlog_player(shard_0_master)
self.check_no_binlog_player(shard_1_master)
# make sure we can't delete a shard with tablets
utils.run_vtctl(['DeleteShard', 'test_keyspace/0'], expect_fail=True)
# remove the original tablets in the original shard
tablet.kill_tablets([shard_master, shard_replica, shard_rdonly1])
for t in [shard_replica, shard_rdonly1]:
utils.run_vtctl(['DeleteTablet', t.tablet_alias], auto_log=True)
utils.run_vtctl(
['DeleteTablet', '-allow_master', shard_master.tablet_alias],
auto_log=True)
# rebuild the serving graph, all mentions of the old shards shoud be gone
utils.run_vtctl(['RebuildKeyspaceGraph', 'test_keyspace'],
auto_log=True)
# delete the original shard
utils.run_vtctl(['DeleteShard', 'test_keyspace/0'], auto_log=True)
# kill everything else
tablet.kill_tablets([
shard_0_master, shard_0_replica, shard_0_rdonly1, shard_1_master,
shard_1_replica, shard_1_rdonly1
])
