1################################################################################ 2# Verify server behaviour when the same transaction is executed in parallel in 3# two servers. 4# 5# Test: 6# 0. The test requires two servers: M1 and M2. 7# 1. With both members ONLINE, create initial data. 8# 2. Executing the same update transaction on both server (almost) in parallel, 9# one will be committed, the other will be aborted. 10# 3. Validate servers state is equal. 11# 4. Clean up. 12################################################################################ 13--let $group_replication_group_name= 8a94f357-aab4-11df-86ab-c80aa9429999 14--source ../inc/have_group_replication_plugin.inc 15--source ../inc/group_replication.inc 16 17--connection server1 18--echo ############################################################ 19--echo # 1. Execute some transactions on server1 and wait for group 20--echo # to be synchronized. 21CREATE TABLE t1 (c1 INT NOT NULL PRIMARY KEY) ENGINE=InnoDB; 22INSERT INTO t1 VALUES (0); 23 24--let $sync_slave_connection= server2 25--source include/sync_slave_sql_with_master.inc 26 27--echo ############################################################ 28--echo # 2. Executing the same transaction on both server (almost) 29--echo # in parallel, one will be committed, the other will be 30--echo # aborted. 31--disable_query_log 32--disable_result_log 33--let $include_silent= 1 34 35--let $value_old= 0 36--let $value_new= 1 37--let $transactions= 50 38while ($transactions > 0) 39{ 40 --let $query= UPDATE t1 SET c1=$value_new WHERE c1=$value_old 41 42 --connection server1 43 --send_eval $query 44 --connection server2 45 --send_eval $query 46 47 --connection server1 48 --error 0, ER_TRANSACTION_ROLLBACK_DURING_COMMIT, ER_ERROR_DURING_COMMIT, ER_LOCK_DEADLOCK, ER_LOCK_WAIT_TIMEOUT 49 --reap 50 --connection server2 51 --error 0, ER_TRANSACTION_ROLLBACK_DURING_COMMIT, ER_ERROR_DURING_COMMIT, ER_LOCK_DEADLOCK, ER_LOCK_WAIT_TIMEOUT 52 --reap 53 54 # Sync both servers to ensure that next transaction does not fail 55 # with mismatch where clause. 56 --let $sync_slave_connection= server1 57 --source include/sync_slave_sql_with_master.inc 58 --let $sync_slave_connection= server2 59 --source include/sync_slave_sql_with_master.inc 60 61 --dec $transactions 62 --inc $value_old 63 --inc $value_new 64} 65--enable_query_log 66--enable_result_log 67--let $include_silent= 0 68 69--echo ############################################################ 70--echo # 3. Validate servers state is equal. 71--let $diff_tables= server1:t1, server2:t1 72--source include/diff_tables.inc 73 74--connection server1 75--let $assert_text= 'There is only one row in table t1 on server 1' 76--let $assert_cond= [SELECT COUNT(*) AS count FROM t1, count, 1] = 1 77--source include/assert.inc 78--let $assert_text= 'There is a value 50 in table t1 on server 1' 79--let $assert_cond= [SELECT COUNT(*) AS count FROM t1 WHERE t1.c1 = 50, count, 1] = 1 80--source include/assert.inc 81 82--connection server2 83--let $assert_text= 'There is only one row in table t1 on server 2' 84--let $assert_cond= [SELECT COUNT(*) AS count FROM t1, count, 1] = 1 85--source include/assert.inc 86--let $assert_text= 'There is a value 50 in table t1 on server 2' 87--let $assert_cond= [SELECT COUNT(*) AS count FROM t1 WHERE t1.c1 = 50, count, 1] = 1 88--source include/assert.inc 89 90--echo ############################################################ 91--echo # 4. Clean up. 92DROP TABLE t1; 93--source ../inc/group_replication_end.inc 94