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86 lines
2.3 KiB
Text
86 lines
2.3 KiB
Text
--source include/have_innodb.inc
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--source include/have_debug.inc
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--source include/master-slave.inc
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--echo MDEV-31655: Parallel replication deadlock victim preference code erroneously removed
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# The problem was that InnoDB would choose the wrong deadlock victim.
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# Create a lot of transactions that can cause deadlocks, and use error
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# injection to check that the first transactions in each group is never
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# selected as deadlock victim.
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--let $rows= 10
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--let $transactions= 5
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--let $gcos= 10
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--connection server_1
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ALTER TABLE mysql.gtid_slave_pos ENGINE=InnoDB;
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CREATE TABLE t1 (a INT PRIMARY KEY, b INT) ENGINE=InnoDB;
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BEGIN;
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--disable_query_log
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--let $i= 0
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while ($i < 10) {
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eval INSERT INTO t1 VALUES ($i, 0);
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inc $i;
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}
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--enable_query_log
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COMMIT;
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--source include/save_master_gtid.inc
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--connection server_2
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--source include/sync_with_master_gtid.inc
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--source include/stop_slave.inc
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SET @old_parallel_threads=@@GLOBAL.slave_parallel_threads;
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SET @old_parallel_mode=@@GLOBAL.slave_parallel_mode;
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eval set @@global.slave_parallel_threads= $transactions;
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set @@global.slave_parallel_mode= conservative;
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SET @old_dbug= @@GLOBAL.debug_dbug;
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# This error injection will allow no retries for GTIDs divisible by 1000.
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SET GLOBAL debug_dbug= "+d,rpl_mdev31655_zero_retries";
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--connection server_1
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SET @old_dbug= @@SESSION.debug_dbug;
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SET SESSION debug_dbug="+d,binlog_force_commit_id";
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--let $j= 1
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while ($j <= $gcos) {
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eval SET @commit_id= $j+1000;
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--let $i= 0
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while ($i < $transactions) {
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--disable_query_log
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eval SET SESSION gtid_seq_no= 1000 + 1000*$j + $i;
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BEGIN;
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--let $k= 0
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while ($k < $rows) {
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eval UPDATE t1 SET b=b+1 WHERE a=(($i+$k) MOD $rows);
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inc $k;
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}
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COMMIT;
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--enable_query_log
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inc $i;
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}
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inc $j;
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}
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SET SESSION debug_dbug= @old_dbug;
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SELECT COUNT(*), SUM(a*100*b) FROM t1;
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--source include/save_master_gtid.inc
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--connection server_2
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--source include/start_slave.inc
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--source include/sync_with_master_gtid.inc
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SET GLOBAL debug_dbug= @old_dbug;
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SELECT COUNT(*), SUM(a*100*b) FROM t1;
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# Clean up.
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--connection server_2
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--source include/stop_slave.inc
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SET GLOBAL slave_parallel_threads=@old_parallel_threads;
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SET GLOBAL slave_parallel_mode=@old_parallel_mode;
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--source include/start_slave.inc
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--connection server_1
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DROP TABLE t1;
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--source include/rpl_end.inc
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