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50e192a04f
Fix the bug properly (plugin cannot be unloaded as long as it's locked). Enable and fix the test case. Significantly reduce number of LOCK_plugin locks for semisync (practically all locks were removed)
131 lines
5.3 KiB
Plaintext
131 lines
5.3 KiB
Plaintext
###############################################################################
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# Bug#17638477 UNINSTALL AND INSTALL SEMI-SYNC PLUGIN CAUSES SLAVES TO BREAK
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# Problem: Uninstallation of Semi sync plugin should be blocked when it is
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# in use.
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# Test case: Uninstallation of semi sync should be allowed
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# On Master:
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# 1) When there is no dump thread
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# 2) When there are no semi sync slaves (i.e., async replication).
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# On Slave:
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# 1) When there is no I/O thread
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# 2) When there are no semi sync enabled I/O thread (i.e.,async replication).
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###############################################################################
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--source include/have_semisync_plugin.inc
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--source include/not_embedded.inc
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--source include/have_binlog_format_statement.inc
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--source include/master-slave.inc
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###############################################################################
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# Case 1: Uninstallation of semi sync plugins should be allowed when it is
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# not in use i.e., when asynchronous replication is active.
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###############################################################################
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# Step 1.1: Install semi sync master plugin on master
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INSTALL PLUGIN rpl_semi_sync_master SONAME 'semisync_master';
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# Step 1.2: Install semi sync slave plugin on slave
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--connection slave
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--echo [connection slave]
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INSTALL PLUGIN rpl_semi_sync_slave SONAME 'semisync_slave';
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# Step 1.3: Uninstallation of semisync plugin on master and slave should be
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# allowed at this state as there is no semi sync replication enabled between
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# master and slave.
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UNINSTALL PLUGIN rpl_semi_sync_slave;
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--connection master
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--echo [connection master]
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UNINSTALL PLUGIN rpl_semi_sync_master;
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# Step 1.4: Check that replication is working fine at the end of the test case.
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CREATE TABLE t1(i int);
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INSERT INTO t1 values (1);
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DROP TABLE t1;
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--sync_slave_with_master
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--echo [connection slave]
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###############################################################################
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# Case 2: Uninstallation of semi sync plugins should be disallowed
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# when it is in use i.e., when semi sync replication is active
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###############################################################################
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# Step 2.1: Install and enable semi sync replication between master and slave
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--source include/install_semisync.inc
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# Step 2.2: Check that rpl_semi_sync_slave uninstallation on Slave is not
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# possible at this state
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--connection slave
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--echo [connection slave]
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UNINSTALL PLUGIN rpl_semi_sync_slave;
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select plugin_name,plugin_status from information_schema.plugins where plugin_name like 'rpl_%';
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# Step 2.3: Check that rpl_semi_sync_master uninstallation on Master is not
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# possible at this state
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--connection master
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--echo [connection master]
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UNINSTALL PLUGIN rpl_semi_sync_master;
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select plugin_name,plugin_status from information_schema.plugins where plugin_name like 'rpl_%';
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# Step 2.4: Check that replication is working fine at the end of the test case.
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CREATE TABLE t1(i int);
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INSERT INTO t1 values (2);
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DROP TABLE t1;
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--sync_slave_with_master
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--echo [connection slave]
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# Step 2.5: Make sure rpl_semi_sync_master_status on Master and
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# rpl_semi_sync_slave_staus on Slave are ON
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show status like "Rpl_semi_sync_slave_status";
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###############################################################################
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# Case 3: Uninstallation of semi sync plugin should be disallowed when there
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# are semi sync slaves even though rpl_semi_sync_master_enabled= OFF;.
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###############################################################################
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# Step 3.1: Disable semi sync on master
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--connection master
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--echo [connection master]
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show status like "Rpl_semi_sync_master_status";
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# Step 3.2: Check that still Rpl_semi_sync_master_clients is 1
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show status like "Rpl_semi_sync_master_clients";
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# Step 3.3: Since Rpl_semi_sync_master_clients is 1, uninstallation of
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# rpl_semi_sync_master should be disallowed.
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select plugin_name,plugin_status from information_schema.plugins where plugin_name like 'rpl_%';
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###############################################################################
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# Case 4: Uninstallation of semi sync plugin should be allowed when it is not
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# in use. Same as Case 1 but this case is to check the case after enabling and
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# disabling semi sync replication.
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###############################################################################
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# Step 4.1: Stop IO thread on slave.
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--connection slave
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--echo [connection slave]
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--source include/stop_slave.inc
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# Step 4.2: Disable semi sync on slave.
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select plugin_name,plugin_status from information_schema.plugins where plugin_name like 'rpl_%';
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# Step 4.3: Start IO thread on slave.
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--source include/start_slave.inc
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# Step 4.4: Uninstall semi sync plugin, it should be successful now.
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select plugin_name,plugin_status from information_schema.plugins where plugin_name like 'rpl_%';
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# Step 4.5: On Master, check that semi sync slaves are now '0'.
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--connection master
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--echo [connection master]
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show status like "Rpl_semi_sync_master_clients";
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# Step 4.6: So uninstalling semi sync plugin should be allowed
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select plugin_name,plugin_status from information_schema.plugins where plugin_name like 'rpl_%';
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# Step 4.7: Check that replication is working fine at the end of the test case
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CREATE TABLE t1(i int);
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INSERT INTO t1 values (3);
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DROP TABLE t1;
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--sync_slave_with_master
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--echo [connection slave]
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# Cleanup
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source include/rpl_end.inc;
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