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ac2857a5fb
A test case to reproduce the issue. The actual fix is in galera library. Reviewed-by: Jan Lindström <jan.lindstrom@mariadb.com>
113 lines
3.3 KiB
Text
113 lines
3.3 KiB
Text
#
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# MDEV-25717 Assertion `owning_thread_id_ == wsrep::this_thread::get_id()'
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#
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# This test exposes a race condition between rollbacker thread and rollback
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# fragment processing.
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#
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--source include/galera_cluster.inc
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--source include/have_debug_sync.inc
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--connection node_1
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CREATE TABLE t1 (f1 INTEGER PRIMARY KEY) Engine=InnoDB;
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INSERT INTO t1 VALUES (1), (2), (3);
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#
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# On node_2 we start a SR transaction, it going to
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# be BF aborted later on
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#
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--connection node_2
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SET SESSION wsrep_trx_fragment_size = 1;
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START TRANSACTION;
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INSERT INTO t1 VALUES (4);
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--connection node_1
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SELECT COUNT(*) FROM t1; # Sync wait
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#
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# Issue a conflicting TRUNCATE statement on node_1:
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# - on node_2, block it before it is going to apply
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# - on node_1, block before the before it BF aborts the INSERT
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#
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--connect node_2a, 127.0.0.1, root, , test, $NODE_MYPORT_2
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--connection node_2a
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SET GLOBAL DEBUG_DBUG = "d,sync.wsrep_apply_toi";
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--connect node_1a, 127.0.0.1, root, , test, $NODE_MYPORT_1
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--connection node_1a
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SET GLOBAL DEBUG_DBUG = "d,sync.wsrep_bf_abort";
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--connection node_1
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--send TRUNCATE TABLE t1
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--connection node_1a
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SET DEBUG_SYNC = "now WAIT_FOR sync.wsrep_bf_abort_reached";
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--connection node_2a
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SET DEBUG_SYNC = "now WAIT_FOR sync.wsrep_apply_toi_reached";
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#
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# Generate one more fragment on the SR transaction.
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# This is going to fail certification and results
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# in a rollback fragment.
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#
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--connection node_2
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--let $expected_cert_failures = `SELECT VARIABLE_VALUE + 1 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_local_cert_failures'`
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--send INSERT INTO t1 VALUES (5)
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#
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# Wait until after certify and observe the certification
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# failure. Let both continue and we are done on node_2.
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#
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--connection node_2a
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SET SESSION wsrep_sync_wait = 0;
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--let $wait_condition = SELECT VARIABLE_VALUE = $expected_cert_failures FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_local_cert_failures'
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--source include/wait_condition.inc
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SET SESSION wsrep_sync_wait = DEFAULT;
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SET GLOBAL DEBUG_DBUG = "";
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SET DEBUG_SYNC = "now SIGNAL signal.wsrep_apply_toi";
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--connection node_2
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--error ER_LOCK_DEADLOCK
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--reap
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#
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# On node_1 we expect the following things:
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# - the TRUNCATE should successfully bf abort the transaction
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# - A rollback fragment should be delivered as a result of
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# certification failure. We expect the rollback fragment to
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# be delivered after TRUNCATE has bf aborted, therefore rollback
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# fragment logs a dummy writeset.
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#
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--connection node_1a
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SET SESSION wsrep_sync_wait=0;
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SET GLOBAL DEBUG_DBUG = "+d,sync.wsrep_log_dummy_write_set";
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# Signal the TRUNCATE to continue and observe the BF abort
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--let $expected_bf_aborts = `SELECT VARIABLE_VALUE + 1 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_local_bf_aborts'`
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SET DEBUG_SYNC = "now SIGNAL signal.wsrep_bf_abort";
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# Expect a timeout if bug is present
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--let $wait_condition = SELECT VARIABLE_VALUE = $expected_bf_aborts FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_local_bf_aborts'
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--source include/wait_condition.inc
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# Observe logging of dummy writeset
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SET DEBUG_SYNC = "now WAIT_FOR sync.wsrep_log_dummy_write_set_reached";
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# TRUNCATE succeeds
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--connection node_1
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--reap
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#
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# Cleanup
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#
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--connection node_2
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SET GLOBAL DEBUG_DBUG = "";
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SET DEBUG_SYNC = "RESET";
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--connection node_1
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SET GLOBAL DEBUG_DBUG = "";
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SET DEBUG_SYNC = "RESET";
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DROP TABLE t1;
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