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-6676: Optimistic parallel replication

Browse Source 
Implement a new mode for parallel replication. In this mode, all transactions
are optimistically attempted applied in parallel. In case of conflicts, the
offending transaction is rolled back and retried later non-parallel.

This is an early-release patch to facilitate testing, more changes to user
interface / options will be expected. The new mode is not enabled by default.
This commit is contained in:
Kristian Nielsen
2014-12-05 16:09:48 +01:00
parent 1e3f09f163
commit db21fddc37
55 changed files with 2596 additions and 466 deletions
Download Patch File Download Diff File Expand all files Collapse all files

85
mysql-test/suite/rpl/r/rpl_parallel_optimistic_nobinlog.result Normal file
View File

@@ -0,0 +1,85 @@
include/rpl_init.inc [topology=1->2]
ALTER TABLE mysql.gtid_slave_pos ENGINE=InnoDB;
CREATE TABLE t1 (a int PRIMARY KEY, b INT) ENGINE=InnoDB;
CREATE TABLE t2 (a int PRIMARY KEY, b INT) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1,0), (2,0), (3,0);
INSERT INTO t2 VALUES (1,0), (2,0);
SET @old_isolation= @@GLOBAL.tx_isolation;
SET @old_parallel_threads=@@GLOBAL.slave_parallel_threads;
include/stop_slave.inc
SET GLOBAL TRANSACTION ISOLATION LEVEL READ COMMITTED;
SET GLOBAL slave_parallel_threads=10;
CHANGE MASTER TO master_use_gtid=slave_pos;
SET @old_parallel_mode=@@GLOBAL.slave_parallel_mode;
SET GLOBAL slave_parallel_mode='domain,transactional,waiting';
*** Test that we replicate correctly when using READ COMMITTED and --log-slave-updates=0 on the slave ***
INSERT INTO t1 SELECT 4, COUNT(*) FROM t2;
INSERT INTO t2 SELECT 4, COUNT(*) FROM t1;
INSERT INTO t1 SELECT 5, COUNT(*) FROM t2;
INSERT INTO t2 SELECT 5, COUNT(*) FROM t1;
INSERT INTO t2 SELECT 6, COUNT(*) FROM t1;
INSERT INTO t1 SELECT 6, COUNT(*) FROM t2;
INSERT INTO t1 SELECT 7, COUNT(*) FROM t2;
INSERT INTO t2 SELECT 7, COUNT(*) FROM t1;
INSERT INTO t2 SELECT 8, COUNT(*) FROM t1;
INSERT INTO t1 SELECT 8, COUNT(*) FROM t2;
INSERT INTO t2 SELECT 9, COUNT(*) FROM t1;
INSERT INTO t1 SELECT 9, COUNT(*) FROM t2;
INSERT INTO t1 SELECT 10, COUNT(*) FROM t2;
INSERT INTO t2 SELECT 10, COUNT(*) FROM t1;
SELECT * FROM t1 ORDER BY a;
a b
1 0
2 0
3 0
4 2
5 3
6 5
7 5
8 7
9 8
10 8
SELECT * FROM t2 ORDER BY a;
a b
1 0
2 0
4 4
5 5
6 5
7 7
8 7
9 8
10 10
include/save_master_gtid.inc
include/start_slave.inc
include/sync_with_master_gtid.inc
SELECT * FROM t1 ORDER BY a;
a b
1 0
2 0
3 0
4 2
5 3
6 5
7 5
8 7
9 8
10 8
SELECT * FROM t2 ORDER BY a;
a b
1 0
2 0
4 4
5 5
6 5
7 7
8 7
9 8
10 10
include/stop_slave.inc
SET GLOBAL tx_isolation= @old_isolation;
SET GLOBAL slave_parallel_mode=@old_parallel_mode;
SET GLOBAL slave_parallel_threads=@old_parallel_threads;
include/start_slave.inc
DROP TABLE t1, t2;
include/rpl_end.inc