database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-08-08 11:22:35 +03:00
Code Activity

MDEV-4937: sql_slave_skip_counter does not work with GTID

Browse Source 
The sql_slave_skip_counter is important to be able to recover replication from
certain errors. Often, an appropriate solution is to set
sql_slave_skip_counter to skip over a problem event. But setting
sql_slave_skip_counter produced an error in GTID mode, with a suggestion to
instead set @@gtid_slave_pos to point past the problem event. This however is
not always possible; for example, in case of an INCIDENT event, that event
does not have any GTID to assign to @@gtid_slave_pos.

With this patch, sql_slave_skip_counter now works in GTID mode the same was as
in non-GTID mode. When set, that many initial events are skipped when the SQL
thread starts, plus as many extra events are needed to completely skip any
partially skipped event group. The GTID position is updated to point past the
skipped event(s).
This commit is contained in:
Kristian Nielsen
2014-06-25 15:24:11 +02:00
parent a985ac3aff
commit 9150a0c7cb
8 changed files with 241 additions and 36 deletions
Download Patch File Download Diff File Expand all files Collapse all files

109
mysql-test/suite/rpl/r/rpl_gtid_basic.result
View File

@@ -61,13 +61,7 @@ include/stop_slave.inc
INSERT INTO t1 VALUES (5, "m1a");
INSERT INTO t2 VALUES (5, "i1a");
CHANGE MASTER TO master_host = '127.0.0.1', master_port = MASTER_PORT,
MASTER_USE_GTID=SLAVE_POS;
SET GLOBAL sql_slave_skip_counter=1;
ERROR HY000: When using GTID, @@sql_slave_skip_counter can not be used. Instead, setting @@gtid_slave_pos explicitly can be used to skip to after a given GTID position.
CHANGE MASTER TO master_host = '127.0.0.1', master_port = MASTER_PORT,
MASTER_USE_GTID=CURRENT_POS;
SET GLOBAL sql_slave_skip_counter=10;
ERROR HY000: When using GTID, @@sql_slave_skip_counter can not be used. Instead, setting @@gtid_slave_pos explicitly can be used to skip to after a given GTID position.
include/start_slave.inc
SELECT * FROM t1 ORDER BY a;
a b
@@ -322,5 +316,108 @@ master_gtid_wait('2-1-10')
0
master_gtid_wait('2-1-10')
0
*** Test sql_gtid_slave_pos when used with GTID ***
include/stop_slave.inc
SET gtid_domain_id=2;
SET gtid_seq_no=1000;
INSERT INTO t1 VALUES (10);
INSERT INTO t1 VALUES (11);
SET sql_slave_skip_counter= 1;
include/start_slave.inc
SELECT * FROM t1 WHERE a >= 10 ORDER BY a;
a
11
SELECT IF(LOCATE("2-1-1001", @@GLOBAL.gtid_slave_pos)>0, "Ok", CONCAT("ERROR! expected GTID 2-1-1001 not found in gtid_slave_pos: ", @@GLOBAL.gtid_slave_pos)) AS status;
status
Ok
include/stop_slave.inc
SET gtid_domain_id=2;
SET gtid_seq_no=1010;
INSERT INTO t1 VALUES (12);
INSERT INTO t1 VALUES (13);
SET sql_slave_skip_counter= 2;
include/start_slave.inc
SELECT * FROM t1 WHERE a >= 10 ORDER BY a;
a
11
13
SELECT IF(LOCATE("2-1-1011", @@GLOBAL.gtid_slave_pos)>0, "Ok", CONCAT("ERROR! expected GTID 2-1-1011 not found in gtid_slave_pos: ", @@GLOBAL.gtid_slave_pos)) AS status;
status
Ok
include/stop_slave.inc
SET gtid_domain_id=2;
SET gtid_seq_no=1020;
INSERT INTO t1 VALUES (14);
INSERT INTO t1 VALUES (15);
INSERT INTO t1 VALUES (16);
SET sql_slave_skip_counter= 3;
include/start_slave.inc
SELECT * FROM t1 WHERE a >= 10 ORDER BY a;
a
11
13
15
16
SELECT IF(LOCATE("2-1-1022", @@GLOBAL.gtid_slave_pos)>0, "Ok", CONCAT("ERROR! expected GTID 2-1-1022 not found in gtid_slave_pos: ", @@GLOBAL.gtid_slave_pos)) AS status;
status
Ok
include/stop_slave.inc
SET gtid_domain_id=2;
SET gtid_seq_no=1030;
INSERT INTO t1 VALUES (17);
INSERT INTO t1 VALUES (18);
INSERT INTO t1 VALUES (19);
SET sql_slave_skip_counter= 5;
include/start_slave.inc
SELECT * FROM t1 WHERE a >= 10 ORDER BY a;
a
11
13
15
16
19
SELECT IF(LOCATE("2-1-1032", @@GLOBAL.gtid_slave_pos)>0, "Ok", CONCAT("ERROR! expected GTID 2-1-1032 not found in gtid_slave_pos: ", @@GLOBAL.gtid_slave_pos)) AS status;
status
Ok
include/stop_slave.inc
SET gtid_domain_id=3;
SET gtid_seq_no=100;
CREATE TABLE t2 (a INT PRIMARY KEY);
DROP TABLE t2;
SET gtid_domain_id=2;
SET gtid_seq_no=1040;
INSERT INTO t1 VALUES (20);
SET @saved_mode= @@GLOBAL.slave_ddl_exec_mode;
SET GLOBAL slave_ddl_exec_mode=STRICT;
SET sql_slave_skip_counter=1;
START SLAVE UNTIL master_gtid_pos="3-1-100";
include/sync_with_master_gtid.inc
include/wait_for_slave_sql_to_stop.inc
SELECT * FROM t2;
ERROR 42S02: Table 'test.t2' doesn't exist
SELECT IF(LOCATE("3-1-100", @@GLOBAL.gtid_slave_pos)>0, "Ok", CONCAT("ERROR! expected GTID 3-1-100 not found in gtid_slave_pos: ", @@GLOBAL.gtid_slave_pos)) AS status;
status
Ok
SET sql_log_bin=0;
CALL mtr.add_suppression("Slave: Unknown table 'test\\.t2' Error_code: 1051");
SET sql_log_bin=1;
START SLAVE;
include/wait_for_slave_sql_error.inc [errno=1051]
SELECT IF(LOCATE("3-1-100", @@GLOBAL.gtid_slave_pos)>0, "Ok", CONCAT("ERROR! expected GTID 3-1-100 not found in gtid_slave_pos: ", @@GLOBAL.gtid_slave_pos)) AS status;
status
Ok
STOP SLAVE IO_THREAD;
SET sql_slave_skip_counter=2;
include/start_slave.inc
SELECT * FROM t1 WHERE a >= 20 ORDER BY a;
a
20
SELECT IF(LOCATE("3-1-101", @@GLOBAL.gtid_slave_pos)>0, "Ok", CONCAT("ERROR! expected GTID 3-1-101 not found in gtid_slave_pos: ", @@GLOBAL.gtid_slave_pos)) AS status;
status
Ok
SELECT IF(LOCATE("2-1-1040", @@GLOBAL.gtid_slave_pos)>0, "Ok", CONCAT("ERROR! expected GTID 2-1-1040 not found in gtid_slave_pos: ", @@GLOBAL.gtid_slave_pos)) AS status;
status
Ok
SET GLOBAL slave_ddl_exec_mode= @saved_mode;
DROP TABLE t1;
include/rpl_end.inc