Galera test failure on galera.galera_var_retry_autocommit

galera.galera_var_retry_autocommit 'innodb' w1 [ fail ]

        Test ended at 2019-01-09 09:27:09

CURRENT_TEST: galera.galera_var_retry_autocommit

mysqltest: At line 55: query 'reap' failed: 1213: Deadlock found when trying to get lock; try restarting transaction

The result from queries just before the failure was:

< snip >

SET DEBUG_SYNC = 'now WAIT_FOR before_cert';

connection node_2;

TRUNCATE TABLE t1;

connection node_1;

ERROR 40001: Deadlock found when trying to get lock; try restarting transaction

SELECT COUNT(*) = 0 FROM t1;

COUNT(*) = 0

1

SET DEBUG_SYNC = 'RESET';

DROP TABLE t1;

connection node_1;

CREATE TABLE t1 (f1 INTEGER PRIMARY KEY) ENGINE=InnoDB;

SET SESSION wsrep_retry_autocommit = 1;

SET DEBUG_SYNC = 'wsrep_before_certification SIGNAL before_cert WAIT_FOR continue';

INSERT INTO t1 (f1) VALUES (3);

connection node_1a;

SET DEBUG_SYNC = 'now WAIT_FOR before_cert';

connection node_2;

TRUNCATE TABLE t1;

connection node_1;