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################################################################################
# This test resolves Deadlock. GR deadlocks when START GR and
# UNINSTALL happens at same time.
#
# 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.
# 4. SIGNAL START GR to resume processing.
# 5. Confirm plugin is UNINSTALLED
# 6. Cleanup
#
################################################################################
--source include/have_debug.inc
--source include/have_group_replication_plugin.inc
--let $rpl_skip_group_replication_start= 1
--source include/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;
SET GLOBAL group_replication_group_name = '8a94f357-bbbb-22aa-33bb-cccaaa420000';
--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 from second connection.
--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";
UNINSTALL PLUGIN group_replication;
--echo Wait for group replication plugin to be deleted.
--let $wait_condition= SELECT COUNT(*)=1 from information_schema.plugins where PLUGIN_NAME like 'group_replication' and PLUGIN_STATUS like 'DELETED';
--source include/wait_condition.inc
--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 plugin is UNINSTALLED.
--echo
--echo Wait for group replication plugin to be removed.
--let $wait_condition= SELECT COUNT(*)=0 from information_schema.plugins where PLUGIN_NAME like 'group_replication';
--source include/wait_condition.inc
--echo
--echo # 6. Cleanup
--echo
#Some test executions may uninstall the plugin before the member is ONLINE and writable
SET GLOBAL read_only = 0;
--source include/install_group_replication_plugin.inc
SET @@GLOBAL.DEBUG= @debug_save;
--source include/group_replication_end.inc
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