binlog.binlog_commit_wait fails sporadically in buildbot

binlog.binlog_commit_wait 'mix,xtradb'   w1 [ fail ]

        Test ended at 2016-05-29 02:24:59

CURRENT_TEST: binlog.binlog_commit_wait

--- /home/buildbot/maria-slave/power8-vlp01-bintar/build/mysql-test/suite/binlog/r/binlog_commit_wait.result	2016-05-29 00:55:03.660077666 -0400

+++ /home/buildbot/maria-slave/power8-vlp01-bintar/build/mysql-test/suite/binlog/r/binlog_commit_wait.reject	2016-05-29 02:24:58.820077667 -0400

@@ -99,11 +99,11 @@

 SET @b= unix_timestamp(current_timestamp()) - unix_timestamp(@a);

 SELECT IF(@b < 20, "Ok", CONCAT("Error: too much time elapsed: ", @b, " seconds >= 20"));

 IF(@b < 20, "Ok", CONCAT("Error: too much time elapsed: ", @b, " seconds >= 20"))

-Ok

+Error: too much time elapsed: 20 seconds >= 20

 SELECT variable_value - @group_commits FROM information_schema.global_status

 WHERE variable_name = 'binlog_group_commits';

 variable_value - @group_commits

-3

+4

 SELECT variable_value - @group_commit_trigger_count FROM information_schema.global_status

 WHERE variable_name = 'binlog_group_commit_trigger_count';

 variable_value - @group_commit_trigger_count

@@ -111,7 +111,7 @@

 SELECT variable_value - @group_commit_trigger_timeout FROM information_schema.global_status

 WHERE variable_name = 'binlog_group_commit_trigger_timeout';

 variable_value - @group_commit_trigger_timeout

-0

+1

 SELECT variable_value - @group_commit_trigger_lock_wait FROM information_schema.global_status

 WHERE variable_name = 'binlog_group_commit_trigger_lock_wait';

 variable_value - @group_commit_trigger_lock_wait

@@ -127,19 +127,19 @@

 SET @b= unix_timestamp(current_timestamp()) - unix_timestamp(@a);

 SELECT IF(@b < 20, "Ok", CONCAT("Error: too much time elapsed: ", @b, " seconds >= 20"));

 IF(@b < 20, "Ok", CONCAT("Error: too much time elapsed: ", @b, " seconds >= 20"))

-Ok

+Error: too much time elapsed: 20 seconds >= 20

 SELECT variable_value - @group_commits FROM information_schema.global_status

 WHERE variable_name = 'binlog_group_commits';

 variable_value - @group_commits

-4

+5

 SELECT variable_value - @group_commit_trigger_count FROM information_schema.global_status

 WHERE variable_name = 'binlog_group_commit_trigger_count';

 variable_value - @group_commit_trigger_count

-2

+1

 SELECT variable_value - @group_commit_trigger_timeout FROM information_schema.global_status

 WHERE variable_name = 'binlog_group_commit_trigger_timeout';

 variable_value - @group_commit_trigger_timeout

-0

+2

 SELECT variable_value - @group_commit_trigger_lock_wait FROM information_schema.global_status

 WHERE variable_name = 'binlog_group_commit_trigger_lock_wait';

 variable_value - @group_commit_trigger_lock_wait

@@ -159,15 +159,15 @@

 SELECT variable_value - @group_commits FROM information_schema.global_status

 WHERE variable_name = 'binlog_group_commits';

 variable_value - @group_commits

-5

+6

 SELECT variable_value - @group_commit_trigger_count FROM information_schema.global_status

 WHERE variable_name = 'binlog_group_commit_trigger_count';

 variable_value - @group_commit_trigger_count

-2

+1

 SELECT variable_value - @group_commit_trigger_timeout FROM information_schema.global_status

 WHERE variable_name = 'binlog_group_commit_trigger_timeout';

 variable_value - @group_commit_trigger_timeout

-1

+3

 SELECT variable_value - @group_commit_trigger_lock_wait FROM information_schema.global_status

 WHERE variable_name = 'binlog_group_commit_trigger_lock_wait';

 variable_value - @group_commit_trigger_lock_wait