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Problem: ======== During mysqld initialization, if the number of GTIDs added since that last purge of the mysql.gtid_slave_pos tables is greater than or equal to the –-gtid-cleanup-batch-size value, a race condition can occur. Specifically, the binlog background thread will submit the bg_gtid_delete_pending job to the mysql handle manager; however, the mysql handle manager may not be initialized, leading to crashes. Solution: ======== Force the mysql handle manager to initialize/start before the binlog background thread is created. Reviewed By: ============ Andrei Elkin <andrei.elkin@mariadb.com>
28 lines
997 B
Plaintext
28 lines
997 B
Plaintext
include/master-slave.inc
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[connection master]
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connection master;
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# Create a GTID event so the binlog background thread will submit a
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# mysql handler job the next time mysqld is restarted.
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create table t1 (a int);
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include/save_master_gtid.inc
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connection slave;
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include/sync_with_master_gtid.inc
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# Set a debug point that forces the main mysqld thread to sleep before
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# anything is initialized for the mysql handle manager
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# Restart the slave mysqld instance so it re-initializes with the
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# binlog background thread submitting a mysql handler job and the
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# mysql handler initialization suspending for a second. Without the fix
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# associated with this test/patch, the following restart will error
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# with a failed assertion.
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include/rpl_restart_server.inc [server_number=2 parameters: --debug_dbug="+d,delay_start_handle_manager"]
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include/start_slave.inc
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#
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# Cleanup
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#
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connection master;
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drop table t1;
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include/save_master_gtid.inc
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connection slave;
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include/sync_with_master_gtid.inc
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include/rpl_end.inc
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