MINI MINI MANI MO

# This test evaluates that group replication can detect SQL thread failures of
# its applier channel, even when the thread is restarted
#
# The test guide is:
# 0. A two member group with started plugins
# 1. Create a table t1 on server 1 and replicate
#    Also insert a value in the table without logging to the binlog
# 2. Restart the applier SQL thread in server 1.
# 3. Insert a value on server 2 that will clash with data on server1
# 4. Check that server1 applier fails and the plugin goes to error mode.
# 5. Remove the value, restart the plugin and do a cleanup
#

--source ../inc/have_group_replication_plugin.inc
--source ../inc/group_replication.inc

--echo #
--echo # 1. Create a table on server 1 and replicate
--echo # Also add a value in the table without logging to the binlog
--echo #

--let $rpl_connection_name= server1
--source include/rpl_connection.inc

CREATE TABLE t1 (a INT PRIMARY KEY);

SET SESSION sql_log_bin= 0;
INSERT INTO t1 VALUES (1);
SET SESSION sql_log_bin= 1;

--source include/rpl_sync.inc

--echo #
--echo # 2. Restart the applier SQL thread in server 1.
--echo #

--source ../inc/gr_stop_applier_sql_thread.inc
--source ../inc/gr_start_applier_sql_thread.inc

--echo #
--echo # 3. Insert a value on server 2 that will clash with data on server1
--echo #

--let $rpl_connection_name= server2
--source include/rpl_connection.inc

INSERT INTO t1 VALUES (1);  # Duplicate entry

--echo #
--echo # 4. Check that server1 applier fails and the plugin goes to error mode.
--echo #

--let $rpl_connection_name= server1
--source include/rpl_connection.inc

--echo # Expect ERROR state.
--let $group_replication_member_state= ERROR
--source ../inc/gr_wait_for_member_state.inc

--let $group_replication_number_of_members= 1
--source ../inc/gr_wait_for_number_of_members.inc

--let $rpl_connection_name= server2
--source include/rpl_connection.inc

--echo # Wait for one member on server 2
--let $group_replication_number_of_members= 1
--source ../inc/gr_wait_for_number_of_members.inc

--echo #
--echo # 5. Remove the value, restart the plugin and do a cleanup
--echo #

--let $rpl_connection_name= server1
--source include/rpl_connection.inc

--source include/stop_group_replication.inc

SET SESSION sql_log_bin= 0;
DELETE FROM t1 WHERE a=1;
SET SESSION sql_log_bin= 1;

--source include/start_group_replication.inc

DROP TABLE t1;

SET SESSION sql_log_bin= 0;
call mtr.add_suppression("Slave SQL for channel 'group_replication_applier': Could not execute Write_rows event on table test.t1*.*");
call mtr.add_suppression("The applier thread execution was aborted. Unable to process more transactions, this member will now leave the group.");
call mtr.add_suppression("Fatal error during execution on the Applier process of Group Replication. The server will now leave the group.");
call mtr.add_suppression("The server was automatically set into read only mode after an error was detected.");
call mtr.add_suppression("Slave SQL for channel 'group_replication_applier': Worker .* failed executing transaction .*");
call mtr.add_suppression("Slave SQL for channel 'group_replication_applier': ... The slave coordinator and worker threads are stopped,.*");
SET SESSION sql_log_bin= 1;

--source ../inc/group_replication_end.inc