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MDEV-25740 Assertion `!wsrep_has_changes(thd) || (thd->lex->sql_command == SQLCOM_CREATE_TABLE && !thd->is_current_stmt_binlog_format_row())' failed in void wsrep_commit_empty(THD*, bool)

Browse Source 
Using ROLLBACK with `completion_type = CHAIN` result in start of
transaction and implicit commit before previous WSREP internal data is
cleared.

Reviewed-by: Jan Lindström <jan.lindstrom@mariadb.com>
This commit is contained in:
mkaruza
2021-07-26 09:14:37 +02:00
committed by Jan Lindström
parent eb26e20df5
commit 386ac12a48
3 changed files with 28 additions and 0 deletions
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9
mysql-test/suite/galera/r/MDEV-25740.result Normal file
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@ -0,0 +1,9 @@
connection node_2;
connection node_1;
SET AUTOCOMMIT = OFF;
SET completion_type = CHAIN;
CREATE TABLE t1(f1 INT) ENGINE=InnoDB;
BEGIN;
INSERT INTO t1 VALUES (1);
ROLLBACK;
DROP TABLE t1;

14
mysql-test/suite/galera/t/MDEV-25740.test Normal file
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@ -0,0 +1,14 @@
#
# When `completion_type = CHAIN` is used, transaction started should not have previous writeset.
#
--source include/galera_cluster.inc
--source include/have_innodb.inc
SET AUTOCOMMIT = OFF;
SET completion_type = CHAIN;
CREATE TABLE t1(f1 INT) ENGINE=InnoDB;
BEGIN;
INSERT INTO t1 VALUES (1);
ROLLBACK;
DROP TABLE t1;

5
sql/sql_parse.cc
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@ -5750,6 +5750,11 @@ mysql_execute_command(THD *thd)
/* Begin transaction with the same isolation level. */
if (tx_chain)
{
#ifdef WITH_WSREP
/* If there are pending changes after rollback we should clear them */
if (wsrep_on(thd) && wsrep_has_changes(thd))
wsrep_after_statement(thd);
#endif
if (trans_begin(thd))
goto error;
}