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vitess-gh/test/initial_sharding.py

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Python
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#!/usr/bin/env python
#
# Copyright 2013, Google Inc. All rights reserved.
# Use of this source code is governed by a BSD-style license that can
# be found in the LICENSE file.
"""This test simulates the first time a database has to be split.
- we start with a keyspace with a single shard and a single table
- we add and populate the sharding key
- we set the sharding key in the topology
- we clone into 2 instances
- we enable filtered replication
- we move all serving types
- we remove the source tablets
- we remove the original shard
"""
import logging
import unittest
from vtdb import keyrange_constants
import base_sharding
import environment
import tablet
import utils
# use_l2vtgate is set if we want to use l2vtgate processes.
# We'll set them up to have:
# l2vtgate1: covers the initial shard, and -80
# l2vtgate2: covers 80-
use_l2vtgate = False
# the l2vtgate processes, if applicable
l2vtgate1 = None
l2vtgate2 = None
# initial shard, covers everything
shard_master = tablet.Tablet()
shard_replica = tablet.Tablet()
shard_rdonly1 = tablet.Tablet()
# split shards
# range '' - 80
shard_0_master = tablet.Tablet()
shard_0_replica = tablet.Tablet()
shard_0_rdonly1 = tablet.Tablet()
# range 80 - ''
shard_1_master = tablet.Tablet()
shard_1_replica = tablet.Tablet()
shard_1_rdonly1 = tablet.Tablet()
all_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]
def setUpModule():
try:
environment.topo_server().setup()
setup_procs = [t.init_mysql() for t in all_tablets]
utils.wait_procs(setup_procs)
except:
tearDownModule()
raise
def tearDownModule():
utils.required_teardown()
if utils.options.skip_teardown:
return
teardown_procs = [t.teardown_mysql() for t in all_tablets]
utils.wait_procs(teardown_procs, raise_on_error=False)
environment.topo_server().teardown()
utils.kill_sub_processes()
utils.remove_tmp_files()
for t in all_tablets:
t.remove_tree()
class TestInitialSharding(unittest.TestCase, base_sharding.BaseShardingTest):
# create_schema will create the same schema on the keyspace
def _create_schema(self):
# Note that the primary key columns are not defined first on purpose to test
# that a reordered column list is correctly used everywhere in vtworker.
create_table_template = '''create table %s(
msg varchar(64),
id bigint not null,
parent_id bigint not null,
primary key (parent_id, id),
index by_msg (msg)
) Engine=InnoDB'''
utils.run_vtctl(['ApplySchema',
'-sql=' + create_table_template % ('resharding1'),
'test_keyspace'],
auto_log=True)
def _add_sharding_key_to_schema(self):
if base_sharding.keyspace_id_type == keyrange_constants.KIT_BYTES:
t = 'varbinary(64)'
else:
t = 'bigint(20) unsigned'
sql = 'alter table %s add custom_ksid_col ' + t
utils.run_vtctl(['ApplySchema',
'-sql=' + sql % ('resharding1'),
'test_keyspace'],
auto_log=True)
def _mark_sharding_key_not_null(self):
if base_sharding.keyspace_id_type == keyrange_constants.KIT_BYTES:
t = 'varbinary(64)'
else:
t = 'bigint(20) unsigned'
sql = 'alter table %s modify custom_ksid_col ' + t + ' not null'
utils.run_vtctl(['ApplySchema',
'-sql=' + sql % ('resharding1'),
'test_keyspace'],
auto_log=True)
# _insert_startup_value inserts a value in the MySQL database before it
# is sharded
def _insert_startup_value(self, tablet_obj, table, mid, msg):
tablet_obj.mquery('vt_test_keyspace', [
'begin',
'insert into %s(parent_id, id, msg) values(%d, %d, "%s")' %
(table, base_sharding.fixed_parent_id, mid, msg),
'commit'
], write=True)
def _insert_startup_values(self):
self._insert_startup_value(shard_master, 'resharding1', 1, 'msg1')
self._insert_startup_value(shard_master, 'resharding1', 2, 'msg2')
self._insert_startup_value(shard_master, 'resharding1', 3, 'msg3')
def _backfill_keyspace_id(self, tablet_obj):
tablet_obj.mquery('vt_test_keyspace', [
'begin',
'update resharding1 set custom_ksid_col=0x1000000000000000 where id=1',
'update resharding1 set custom_ksid_col=0x9000000000000000 where id=2',
'update resharding1 set custom_ksid_col=0xD000000000000000 where id=3',
'commit'
], write=True)
def _check_startup_values(self):
# check first value is in the left shard
for t in [shard_0_master, shard_0_replica, shard_0_rdonly1]:
self._check_value(t, 'resharding1', 1, 'msg1', 0x1000000000000000)
for t in [shard_1_master, shard_1_replica, shard_1_rdonly1]:
self._check_value(t, 'resharding1', 1, 'msg1',
0x1000000000000000, should_be_here=False)
# check second value is in the right shard
for t in [shard_0_master, shard_0_replica, shard_0_rdonly1]:
self._check_value(t, 'resharding1', 2, 'msg2', 0x9000000000000000,
should_be_here=False)
for t in [shard_1_master, shard_1_replica, shard_1_rdonly1]:
self._check_value(t, 'resharding1', 2, 'msg2', 0x9000000000000000)
# check third value is in the right shard too
for t in [shard_0_master, shard_0_replica, shard_0_rdonly1]:
self._check_value(t, 'resharding1', 3, 'msg3', 0xD000000000000000,
should_be_here=False)
for t in [shard_1_master, shard_1_replica, shard_1_rdonly1]:
self._check_value(t, 'resharding1', 3, 'msg3', 0xD000000000000000)
def _insert_lots(self, count, base=0):
for i in xrange(count):
self._insert_value(shard_master, 'resharding1', 10000 + base + i,
'msg-range1-%d' % i, 0xA000000000000000 + base + i)
self._insert_value(shard_master, 'resharding1', 20000 + base + i,
'msg-range2-%d' % i, 0xE000000000000000 + base + i)
# _check_lots returns how many of the values we have, in percents.
def _check_lots(self, count, base=0):
found = 0
for i in xrange(count):
if self._is_value_present_and_correct(shard_1_replica, 'resharding1',
10000 + base + i, 'msg-range1-%d' %
i, 0xA000000000000000 + base + i):
found += 1
if self._is_value_present_and_correct(shard_1_replica, 'resharding1',
20000 + base + i, 'msg-range2-%d' %
i, 0xE000000000000000 + base + i):
found += 1
percent = found * 100 / count / 2
logging.debug('I have %d%% of the data', percent)
return percent
def _check_lots_timeout(self, count, threshold, timeout, base=0):
while True:
value = self._check_lots(count, base=base)
if value >= threshold:
return value
timeout = utils.wait_step('enough data went through', timeout)
# _check_lots_not_present makes sure no data is in the wrong shard
def _check_lots_not_present(self, count, base=0):
for i in xrange(count):
self._check_value(shard_0_replica, 'resharding1', 10000 + base + i,
'msg-range1-%d' % i, 0xA000000000000000 + base + i,
should_be_here=False)
self._check_value(shard_0_replica, 'resharding1', 20000 + base + i,
'msg-range2-%d' % i, 0xE000000000000000 + base + i,
should_be_here=False)
def test_resharding(self):
global l2vtgate1, l2vtgate2
# 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)
# 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.L2VtGate()
l2vtgate1.start(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)
_, addr = l2vtgate1.rpc_endpoint()
l2vtgate1_param = '%s|test_keyspace|0' % addr
utils.VtGate().start(cache_ttl='0', l2vtgates=[l2vtgate1_param,])
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(
'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()
if use_l2vtgate:
l2vtgate1.kill()
l2vtgate1 = utils.L2VtGate()
l2vtgate1.start(tablets=
[shard_master, shard_replica, shard_rdonly1,
shard_0_master, shard_0_replica, shard_0_rdonly1],
tablet_filters='test_keyspace|0,test_keyspace|-80')
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.L2VtGate()
l2vtgate2.start(tablets=
[shard_1_master, shard_1_replica, shard_1_rdonly1],
tablet_filters='test_keyspace|80-',
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')
_, addr1 = l2vtgate1.rpc_endpoint()
_, addr2 = l2vtgate2.rpc_endpoint()
l2vtgate1_param1 = '%s|test_keyspace|0' % addr1
l2vtgate1_param2 = '%s|test_keyspace|-80' % addr1
l2vtgate2_param = '%s|test_keyspace|80-' % addr2
utils.VtGate().start(cache_ttl='0', l2vtgates=[l2vtgate1_param1,
l2vtgate1_param2,
l2vtgate2_param,])
else:
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',
'--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)
# 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)
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')
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])
if __name__ == '__main__':
utils.main()
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