galera.MW-328B failed in buildbot with a timeout

galera.MW-328B 'innodb'                  w4 [ fail ]  timeout after 900 seconds

        Test ended at 2017-10-11 13:10:10

Test case timeout after 900 seconds

== /dev/shm/var/4/log/MW-328B.log == 

CREATE TABLE t1 (f1 INTEGER AUTO_INCREMENT PRIMARY KEY, f2 CHAR(20) DEFAULT 'abc') ENGINE=InnoDB;

INSERT INTO t1 (f1) VALUES (1);

CREATE TABLE t2 (f1 CHAR(20)) ENGINE=InnoDB;

CREATE PROCEDURE proc_update ()

BEGIN

DECLARE CONTINUE HANDLER FOR SQLEXCEPTION BEGIN END;

SET SESSION wsrep_sync_wait = 0;

WHILE 1 DO

UPDATE t1 SET f2 = LEFT(MD5(RAND()), 4);

END WHILE;

END|

connect node_1X, 127.0.0.1, root, , test, $NODE_MYPORT_1;

connection node_1X;

CALL proc_update();;

connection node_2;

SET SESSION wsrep_retry_autocommit = 0;

 == /dev/shm/var/4/tmp/analyze-timeout-mysqld.1.err ==

mysqltest: Could not open connection 'default' after 500 attempts: 2002 Can't connect to local MySQL server through socket '/dev/shm/var/tmp/4/mysqld.1.sock' (111)

 == /dev/shm/var/4/tmp/analyze-timeout-mysqld.2.err ==

mysqltest: Could not open connection 'default' after 500 attempts: 2002 Can't connect to local MySQL server through socket '/dev/shm/var/tmp/4/mysqld.2.sock' (111)