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MDEV-4605: Failing to load GTID slave position from rpl.gtid_slave_pos

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There were several cases where the slave GTID position was not loaded
correctly before being used. This caused various failures such as
corrupting the position at slave start and empty values of
@@gtid_slave_pos and @@gtid_current_pos.

Fixed by adding more checks for loaded position, and by always loading
the position at server startup.
This commit is contained in:
unknown
2013-06-03 07:41:38 +02:00
parent 6feadb1082
commit 7ad47ab0e0
8 changed files with 150 additions and 5 deletions
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10
mysql-test/suite/rpl/r/rpl_gtid_stop_start.result
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@ -50,5 +50,15 @@ a
3
4
5
*** Test that @@gtid_slave_pos and @@gtid_current_pos are correctly loaded even if slave threads have not started. ***
SET @slave_pos2= @@GLOBAL.gtid_slave_pos;
SET @current_pos2= @@GLOBAL.gtid_current_pos;
SELECT IF(@slave_pos1=@slave_pos2, "OK", CONCAT(@slave_pos1, " != ", @slave_pos2));
IF(@slave_pos1=@slave_pos2, "OK", CONCAT(@slave_pos1, " != ", @slave_pos2))
OK
SELECT IF(@current_pos1=@current_pos2, "OK", CONCAT(@current_pos1, " != ", @current_pos2));
IF(@current_pos1=@current_pos2, "OK", CONCAT(@current_pos1, " != ", @current_pos2))
OK
include/start_slave.inc
DROP TABLE t1;
include/rpl_end.inc

25
mysql-test/suite/rpl/t/rpl_gtid_stop_start.test
View File

@ -93,6 +93,31 @@ INSERT INTO t1 VALUES(5);
--source include/wait_condition.inc
SELECT * FROM t1 ORDER BY a;
--echo *** Test that @@gtid_slave_pos and @@gtid_current_pos are correctly loaded even if slave threads have not started. ***
--let $slave_pos1= `SELECT @@GLOBAL.gtid_slave_pos`
--let $current_pos1= `SELECT @@GLOBAL.gtid_current_pos`
--write_file $MYSQLTEST_VARDIR/tmp/mysqld.2.expect
wait
EOF
--shutdown_server 30
--source include/wait_until_disconnected.inc
--append_file $MYSQLTEST_VARDIR/tmp/mysqld.2.expect
restart: --skip-slave-start=1 --skip-log-bin
EOF
--enable_reconnect
--source include/wait_until_connected_again.inc
--disable_query_log
eval SET @slave_pos1= "$slave_pos1";
eval SET @current_pos1= "$current_pos1";
--enable_query_log
SET @slave_pos2= @@GLOBAL.gtid_slave_pos;
SET @current_pos2= @@GLOBAL.gtid_current_pos;
SELECT IF(@slave_pos1=@slave_pos2, "OK", CONCAT(@slave_pos1, " != ", @slave_pos2));
SELECT IF(@current_pos1=@current_pos2, "OK", CONCAT(@current_pos1, " != ", @current_pos2));
--source include/start_slave.inc
--connection server_1
DROP TABLE t1;