Sporadic buildbot failures in rpl.rpl_semi_sync_uninstall_plugin, 2013: 'Lost connection to MySQL server

CURRENT_TEST: rpl.rpl_semi_sync_uninstall_plugin

--- /usr/share/mysql/mysql-test/suite/rpl/r/rpl_semi_sync_uninstall_plugin.result	2014-11-19 07:12:09.000000000 +0000

+++ /run/shm/var/4/log/rpl_semi_sync_uninstall_plugin.reject	2014-11-19 15:00:33.507204650 +0000

@@ -20,28 +20,22 @@

 rpl_semi_sync_slave	DELETED

 [connection master]

 UNINSTALL PLUGIN rpl_semi_sync_master;

-Warnings:

-Warning	1620	Plugin is busy and will be uninstalled on shutdown

 select plugin_name,plugin_status from information_schema.plugins where plugin_name like 'rpl_%';

 plugin_name	plugin_status

-rpl_semi_sync_master	DELETED

 CREATE TABLE t1(i int);

 INSERT INTO t1 values (2);

 DROP TABLE t1;

 [connection slave]

 show status like "Rpl_semi_sync_slave_status";

 Variable_name	Value

-Rpl_semi_sync_slave_status	ON

+Rpl_semi_sync_slave_status	OFF

 [connection master]

 show status like "Rpl_semi_sync_master_status";

 Variable_name	Value

-Rpl_semi_sync_master_status	ON

 show status like "Rpl_semi_sync_master_clients";

 Variable_name	Value

-Rpl_semi_sync_master_clients	1

 select plugin_name,plugin_status from information_schema.plugins where plugin_name like 'rpl_%';

 plugin_name	plugin_status

-rpl_semi_sync_master	DELETED

 [connection slave]

 include/stop_slave.inc

 select plugin_name,plugin_status from information_schema.plugins where plugin_name like 'rpl_%';

mysqltest: Result length mismatch

 - saving '/run/shm/var/4/log/rpl.rpl_semi_sync_uninstall_plugin-stmt/' to '/run/shm/var/log/rpl.rpl_semi_sync_uninstall_plugin-stmt/'

Retrying test rpl.rpl_semi_sync_uninstall_plugin, attempt(2/3)...

worker[4] > Restart  - not started

worker[4] > Restart  - not started

***Warnings generated in error logs during shutdown after running tests: rpl.rpl_semi_sync_uninstall_plugin

141119 15:00:33 [Warning] Master server does not support semi-sync, fallback to asynchronous replication

worker[4] > Restart [mysqld.1 - pid: 19176, winpid: 19176] - running with different options '--binlog-format=statement --log-bin=master-bin --log-bin=master-bin' != '--log-bin=master-bin --binlog-format=statement --log-bin=master-bin'

rpl.rpl_semi_sync_uninstall_plugin 'stmt' w4 [ retry-pass ]    130

rpl.rpl_semi_sync_uninstall_plugin 'stmt' [ fail ]  timeout after 900 seconds

        Test ended at 2015-01-06 17:51:50

Test case timeout after 900 seconds

== /private/var/lib/buildslave/maria-slave/labrador/build/mysql-test/var/log/rpl_semi_sync_uninstall_plugin.log == 

UNINSTALL PLUGIN rpl_semi_sync_master;

CREATE TABLE t1(i int);

INSERT INTO t1 values (1);

DROP TABLE t1;

[connection slave]

include/install_semisync.inc

[connection slave]

UNINSTALL PLUGIN rpl_semi_sync_slave;

Warnings:

Warning	1620	Plugin is busy and will be uninstalled on shutdown

select plugin_name,plugin_status from information_schema.plugins where plugin_name like 'rpl_%';

plugin_name	plugin_status

rpl_semi_sync_slave	DELETED

[connection master]

UNINSTALL PLUGIN rpl_semi_sync_master;

select plugin_name,plugin_status from information_schema.plugins where plugin_name like 'rpl_%';

plugin_name	plugin_status

CREATE TABLE t1(i int);

INSERT INTO t1 values (2);

DROP TABLE t1;

 == /private/var/lib/buildslave/maria-slave/labrador/build/mysql-test/var/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 '/private/var/lib/buildslave/maria-slave/labrador/build/mysql-test/var/tmp/mysqld.1.sock' (61 "Connection refused")

 == /private/var/lib/buildslave/maria-slave/labrador/build/mysql-test/var/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 '/private/var/lib/buildslave/maria-slave/labrador/build/mysql-test/var/tmp/mysqld.2.sock' (61 "Connection refused")