Bug #25755137 post-push. Inadvertently dropped SET DEBUG_SYNC is restored in the test. Otherwise there would be chances for the test to fail. Approved by Joao \thanks for discussion and offering an alternative approach.

Author: Andrei Elkin

mysql-test/suite/binlog/r/binlog_atomic_ddl_rollback.result

@@ -2,6 +2,7 @@ CREATE TABLE t1 (a int);
 CREATE TABLE t2 (a int);
 CREATE VIEW v_12 AS SELECT t1.a AS a, t2.a AS b FROM t1,t2;
 CREATE TEMPORARY TABLE tmp (a INT) ENGINE=innodb;
+SET DEBUG_SYNC= 'action_after_write_bin_log WAIT_FOR continue';
 ALTER TABLE t2 ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=1;
 DROP TABLE t1,t2;
 SET DEBUG_SYNC= 'now SIGNAL continue';

mysql-test/suite/binlog/t/binlog_atomic_ddl_rollback.test

@@ -22,6 +22,7 @@ CREATE VIEW v_12 AS SELECT t1.a AS a, t2.a AS b FROM t1,t2;
 CREATE TEMPORARY TABLE tmp (a INT) ENGINE=innodb;
 
 --connection default
+SET DEBUG_SYNC= 'action_after_write_bin_log WAIT_FOR continue';
 --send ALTER TABLE t2 ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=1
 
 # Deadlock's 2nd participant