MDEV-22232 Fix test after changing behavior of ALTER DROP FOREIGN KEY

Signed-off-by: Julius Goryavsky <julius.goryavsky@mariadb.com>

mysql-test/suite/galera/r/MDEV-22232.result

@@ -3,21 +3,21 @@ connection node_1;
 connect con1,127.0.0.1,root,,test,$NODE_MYPORT_1;
 --- CTAS with empty result set ---
 CREATE TABLE t1 (a INT) ENGINE=InnoDB;
-SET DEBUG_SYNC = 'create_table_select_before_create SIGNAL may_alter WAIT_FOR bf_abort';
+SET DEBUG_SYNC = 'create_table_select_before_create SIGNAL may_run WAIT_FOR bf_abort';
 CREATE TABLE t2 SELECT * FROM t1;
 connection node_1;
-SET DEBUG_SYNC = 'now WAIT_FOR may_alter';
-ALTER TABLE t1 DROP FOREIGN KEY b, ALGORITHM=COPY;
+SET DEBUG_SYNC = 'now WAIT_FOR may_run';
+TRUNCATE TABLE t1;
 connection con1;
 ERROR 70100: Query execution was interrupted
 SET DEBUG_SYNC = 'RESET';
 --- CTAS with non-empty result set ---
 INSERT INTO t1 VALUES (10), (20), (30);
-SET DEBUG_SYNC = 'create_table_select_before_create SIGNAL may_alter WAIT_FOR bf_abort';
+SET DEBUG_SYNC = 'create_table_select_before_create SIGNAL may_run WAIT_FOR bf_abort';
 CREATE TABLE t2 SELECT * FROM t1;
 connection node_1;
-SET DEBUG_SYNC = 'now WAIT_FOR may_alter';
-ALTER TABLE t1 DROP FOREIGN KEY b, ALGORITHM=COPY;
+SET DEBUG_SYNC = 'now WAIT_FOR may_run';
+TRUNCATE TABLE t1;
 connection con1;
 ERROR 70100: Query execution was interrupted
 SET DEBUG_SYNC = 'RESET';

mysql-test/suite/galera/t/MDEV-22232.test

@@ -18,19 +18,16 @@
 CREATE TABLE t1 (a INT) ENGINE=InnoDB;
 
 # Run CTAS until the resulting table gets created,
-# then it gets BF aborted by ALTER.
-SET DEBUG_SYNC = 'create_table_select_before_create SIGNAL may_alter WAIT_FOR bf_abort';
+# then it gets BF aborted by other DDL.
+SET DEBUG_SYNC = 'create_table_select_before_create SIGNAL may_run WAIT_FOR bf_abort';
 --send
   CREATE TABLE t2 SELECT * FROM t1;
 
 # Wait for CTAS to reach the table create point,
-# start executing ALTER and BF abort CTAS.
+# start executing other DDL and BF abort CTAS.
 --connection node_1
-SET DEBUG_SYNC = 'now WAIT_FOR may_alter';
---disable_result_log
---error ER_ERROR_ON_RENAME
-ALTER TABLE t1 DROP FOREIGN KEY b, ALGORITHM=COPY;
---enable_result_log
+SET DEBUG_SYNC = 'now WAIT_FOR may_run';
+TRUNCATE TABLE t1;
 
 --connection con1
 # CTAS gets BF aborted.
@@ -46,19 +43,16 @@ SET DEBUG_SYNC = 'RESET';
 INSERT INTO t1 VALUES (10), (20), (30);
 
 # Run CTAS until the resulting table gets created,
-# then it gets BF aborted by ALTER.
-SET DEBUG_SYNC = 'create_table_select_before_create SIGNAL may_alter WAIT_FOR bf_abort';
+# then it gets BF aborted by other DDL.
+SET DEBUG_SYNC = 'create_table_select_before_create SIGNAL may_run WAIT_FOR bf_abort';
 --send
   CREATE TABLE t2 SELECT * FROM t1;
 
 # Wait for CTAS to reach the table create point,
-# start executing ALTER and BF abort CTAS.
+# start executing other DDL and BF abort CTAS.
 --connection node_1
-SET DEBUG_SYNC = 'now WAIT_FOR may_alter';
---disable_result_log
---error ER_ERROR_ON_RENAME
-ALTER TABLE t1 DROP FOREIGN KEY b, ALGORITHM=COPY;
---enable_result_log
+SET DEBUG_SYNC = 'now WAIT_FOR may_run';
+TRUNCATE TABLE t1;
 
 --connection con1
 # CTAS gets BF aborted.