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################################################################################ # This test confirms that when START GR and UNINSTALL PLUGIN GR commands are # executed concurrently, no deadlock happens. # # Test: # 0. The test requires one server. # 1. Setup GR environment and execute START GR. # 2. Block start, so we can execute UNINSTALL. # 3. Execute UNINSTALL PLUGIN GR should fail with error # ER_PLUGIN_CANNOT_BE_UNINSTALLED as START GR is already running. # 4. SIGNAL START GR to resume processing. # 5. Confirm GR is started # 6. Cleanup # ################################################################################ --source include/have_debug.inc --source include/have_debug_sync.inc --source ../inc/have_group_replication_plugin.inc --let $rpl_skip_group_replication_start= 1 --source ../inc/group_replication.inc --echo --echo # 1. Setup GR environment and execute START GR. --echo --let $rpl_connection_name= server1 --source include/rpl_connection.inc SET GLOBAL group_replication_bootstrap_group=ON; --replace_result $group_replication_group_name GROUP_REPLICATION_GROUP_NAME --eval SET GLOBAL group_replication_group_name= "$group_replication_group_name" --echo --echo # 2. Block start, so we can execute UNINSTALL. --echo ## If START GR gets lock and UNINSTALL blocks SQL Query execution, ## GR used to deadlock. SET @debug_save= @@GLOBAL.DEBUG; SET @@GLOBAL.DEBUG= '+d,group_replication_wait_on_start'; --send START GROUP_REPLICATION --echo --echo # 3. Execute UNINSTALL PLUGIN GR should fail with error --echo # ER_PLUGIN_CANNOT_BE_UNINSTALLED as START GR is already running. --echo --let $rpl_connection_name= server_1 --source include/rpl_connection.inc # Wait for the debug sync to be reached. SET DEBUG_SYNC= "now WAIT_FOR signal.start_waiting"; --error ER_PLUGIN_CANNOT_BE_UNINSTALLED UNINSTALL PLUGIN group_replication; --echo --echo # 4. SIGNAL START GR to resume processing. --echo SET DEBUG_SYNC= 'now SIGNAL signal.start_continue'; --let $rpl_connection_name= server1 --source include/rpl_connection.inc --reap --echo --echo # 5. Confirm GR is started --echo --let $group_replication_member_state= ONLINE --source ../inc/gr_wait_for_member_state.inc --echo --echo # 6. Cleanup --echo SET @@GLOBAL.DEBUG= @debug_save; --source ../inc/group_replication_end.inc