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-rw-r--r--sql/sql_handler.cc3
1 files changed, 3 insertions, 0 deletions
diff --git a/sql/sql_handler.cc b/sql/sql_handler.cc
index e20ee243b79..b179d54eadf 100644
--- a/sql/sql_handler.cc
+++ b/sql/sql_handler.cc
@@ -589,7 +589,10 @@ retry:
/*
Always close statement transaction explicitly,
so that the engine doesn't have to count locks.
+ There should be no need to perform transaction
+ rollback due to deadlock.
*/
+ DBUG_ASSERT(! thd->transaction_rollback_request);
trans_rollback_stmt(thd);
mysql_ha_close_table(thd, hash_tables);
goto retry;