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45 lines
1.3 KiB
Text
45 lines
1.3 KiB
Text
#
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# MDEV-33136: Properly BF-abort user transactions with explicit locks
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#
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# User transactions may acquire explicit MDL locks from InnoDB level
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# when persistent statistics is re-read for a table.
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# If such a transaction would be subject to BF-abort, it was improperly
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# detected as a system transaction and wouldn't get aborted.
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#
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# The fix: Check if a transaction holding explicit MDL locks is a user
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# transaction in the MDL conflict handling code.
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--source include/galera_cluster.inc
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--source include/have_innodb.inc
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--source include/have_debug_sync.inc
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--source include/have_debug.inc
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--connect node_1a,127.0.0.1,root,,test,$NODE_MYPORT_1
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--connection node_1
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CREATE TABLE t1 (f1 INTEGER PRIMARY KEY) ENGINE=InnoDB;
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--connection node_1a
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RENAME TABLE t1 TO tmp, tmp TO t1;
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# RENAME forces the next statement to re-read statistics from persistent storage,
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# which will acquire MDL locks on the statistics tables in InnoDB.
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SET SESSION wsrep_retry_autocommit = 0;
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SET DEBUG_SYNC = 'dict_stats_mdl_acquired SIGNAL may_toi WAIT_FOR bf_abort';
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--send
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INSERT INTO t1 VALUES (1);
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--connection node_1
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SET DEBUG_SYNC = 'now WAIT_FOR may_toi';
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TRUNCATE TABLE t1;
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--connection node_1a
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# Local INSERT gets aborted.
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--error ER_LOCK_DEADLOCK
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--reap
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# Cleanup
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--connection node_1
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SET DEBUG_SYNC = 'RESET';
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DROP TABLE t1;
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--disconnect node_1a
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--source include/galera_end.inc
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