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# ==== Purpose ====
#
# This test checks that when stopped at the exact moment during the auto
# position protocol where rotate events are being exchanged and the group
# master log position goes for a moment back to 4, this does not affect
# posterior replica start operations.
#
# ==== Requirements ====
#
# R1: The process of MTA recovery should not fail even if the replica is
# stopped in the middle of the auto positioning protocol.
#
# ==== Implementation ====
#
# 1. Add some data to be applied in the replica
# 2. Add a debug point so the replica stops at the first sent rotate
# Stop the replica IO thread so the auto positioning protocol runs
# 3. Stop the replica ensuring it stops on the first replica
# sent rotate that has 4 as the position
# 4. Start the replica again and check all is good
#
# ==== References ====
#
# Bug#30571587 MYSQL 8.0.18 FAILS ON STOP SLAVE/START SLAVE STRESS TEST
#
--source include/have_debug_sync.inc
--source include/only_mts_replica_parallel_workers.inc
--source include/have_binlog_format_row.inc
--source include/master-slave.inc
--echo
--echo ############################################################
--echo # 1. Add some data to be applied in the replica
# Some data for worker execution
CREATE TABLE t1 (a INT PRIMARY KEY);
INSERT INTO t1 VALUES(1);
--source include/sync_slave_sql_with_master.inc
--echo
--echo ############################################################
--echo # 2. Add a debug point so the replica stops at the first sent rotate
--echo # Stop the replica IO thread so the auto positioning protocol runs
--source include/stop_slave_io.inc
--let $debug_point=block_on_master_pos_4_rotate
--source include/add_debug_point.inc
--let $debug_point=block_on_thread_stop_after_awake
--source include/add_debug_point.inc
--source include/start_slave_io.inc
--echo
--echo ############################################################
--echo # 3. Stop the replica ensuring it stops on the first replica
--echo # sent rotate that has 4 as the position
SET DEBUG_SYNC= "now WAIT_FOR signal.reach_pos_4_rotate_event";
--send STOP REPLICA
--let $rpl_connection_name= server_2
--source include/rpl_connection.inc
# Wait on for the point where we already signaled the SQL thread to stop
# This wait also prevents concurrency scenarios between the debug point setting
# a thread stage, the SQL thread setting another stage while waiting for
# workers to finish and the stop process issuing a awake request in the middle
SET DEBUG_SYNC= "now WAIT_FOR signal.stop_point_after_awake";
# Let the thread stop
SET DEBUG_SYNC= "now SIGNAL signal.rotate_event_continue";
--source include/rpl_connection_slave.inc
--reap
--echo
--echo ############################################################
--echo # 4. Start the replica again and check all is good
--let $debug_point=block_on_master_pos_4_rotate
--source include/remove_debug_point.inc
--let $debug_point=block_on_thread_stop_after_awake
--source include/remove_debug_point.inc
SET DEBUG_SYNC= "RESET";
--source include/start_slave.inc
--source include/rpl_connection_master.inc
INSERT INTO t1 VALUES(2);
DROP TABLE t1;
--source include/sync_slave_sql_with_master.inc
--source include/rpl_end.inc
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