connect.tbl fails sporadically in buildbot with result mismatch

@@ -155,7 +155,7 @@

 CREATE TABLE total (v BIGINT(20) UNSIGNED NOT NULL) ENGINE=CONNECT TABLE_TYPE=TBL TABLE_LIST='t1,t2' OPTION_LIST='thread=yes,port=PORT';;

 SELECT * FROM total order by v desc;

 v

-22

+11

 11

 DROP TABLE total;

 DROP TABLE t1;

@@ -156,7 +156,7 @@

 SELECT * FROM total order by v desc;

 v

 22

-11

+22

 DROP TABLE total;

 DROP TABLE t1;

 DROP TABLE t2;

@@ -155,8 +155,8 @@

 CREATE TABLE total (v BIGINT(20) UNSIGNED NOT NULL) ENGINE=CONNECT TABLE_TYPE=TBL TABLE_LIST='t1,t2' OPTION_LIST='thread=yes,port=PORT';;

 SELECT * FROM total order by v desc;

 v

-22

-11

+21

+21

 DROP TABLE total;

 DROP TABLE t1;

 DROP TABLE t2;