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# ==== Purpose ====
# Verify that a clear and meaningful message is logged on the source when
# restarting the IO thread.
#
# ==== Requirements ====
# A clear and meaningful message must be logged in the source log file during
# the IO thread restart.
#
# ==== Implementation ====
# 1. Set up initial source-replica configuration
# 2. Start IO thread on replica which will start a dump thread on source
# 3. Restart the IO thread (Source should kill existing dump thread before
# starting a new dump thread)
# 4. Verify that no message appears stating 'killed the zombie thread'
# 5. Verify that a message stating 'killed the old dump thread' is present
# 6. Cleanup
#
# ==== References ====
# Bug#25330090 SLIGHTLY CONFUSING 'NOTE' REPORTED IN MASTER SERVER'S LOG WHEN
# SLAVE RECONNECTS
--source include/have_binlog_format_row.inc
--echo # 1. Set up initial source-replica configuration
--let rpl_skip_start_slave= 1
--source include/master-slave.inc
--source include/rpl_connection_slave.inc
--echo # 2. Start IO thread on replica which will start a dump thread on source
--source include/start_slave_io.inc
--echo # 3. Restart the IO thread (Source should kill existing dump thread
--echo # before starting a new dump thread)
--source include/stop_slave_io.inc
--source include/start_slave_io.inc
--echo # 4. Verify that no message appears stating 'killed the zombie thread'
--let $assert_file=$MYSQLTEST_VARDIR/log/mysqld.1.err
--let $assert_count_condition= <=0
--let $assert_select= While initializing dump thread for replica with UUID.*, found a zombie dump thread with the same UUID.*
--let $assert_text= No zombie thread kill message on the source
--source include/assert_grep.inc
--echo # 5. Verify that a message stating 'killed the old dump thread' is present
--let $assert_file=$MYSQLTEST_VARDIR/log/mysqld.1.err
--let $assert_count_condition= >=1
--let $assert_select= Upon reconnection with the replica, while initializing the dump thread for.*, an existing dump thread with the same.* was detected.*
--let $assert_text= Found dump thread kill message on the source
--source include/assert_grep.inc
--echo # 6. Cleanup
--source include/rpl_connection_slave.inc
# We do not care about SQL thread for this test scenario
--let $rpl_only_running_threads= 1
--source include/rpl_end.inc
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