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0a68328673
This is actually an existing problem in the old binlog implementation, and this patch is applicable to old binlog also. The problem is that RESET MASTER can run concurrently with binlog dump threads / connected slaves. This will remove the binlog from under the feet of the reader, which can cause all sorts of strange behaviour. This patch fixes the problem by disallowing to run RESET MASTER when dump threads (or other RESET MASTER or SHOW BINARY LOGS) are running. An error is thrown in this case, user must stop slaves and/or kill dump threads to make the RESET MASTER go through. A slave that connects in the middle of RESET MASTER will wait for it to complete. Fix a lot of test cases to kill any lingering dump threads before doing RESET MASTER, mostly just by sourcing include/kill_binlog_dump_threads.inc. Signed-off-by: Kristian Nielsen <knielsen@knielsen-hq.org>
94 lines
3.2 KiB
Text
94 lines
3.2 KiB
Text
#
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# Test the behavior of a Galera async slave if it goes non-prim. Async replication
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# should abort with an error but it should be possible to restart it.
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#
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# The galera/galera_2node_slave.cnf describes the setup of the nodes
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#
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--source include/have_innodb.inc
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--source include/big_test.inc
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--source include/galera_cluster.inc
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# Step #1. Establish replication
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#
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# As node 4 is not a Galera node, and galera_cluster.inc does not open connetion to it
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# we open the node_4 connection here
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--connect node_4, 127.0.0.1, root, , test, $NODE_MYPORT_4
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--connection node_2
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--disable_query_log
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--eval CHANGE MASTER TO MASTER_HOST='127.0.0.1', MASTER_USER='root', MASTER_SSL_VERIFY_SERVER_CERT=0, MASTER_PORT=$NODE_MYPORT_4;
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--enable_query_log
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START SLAVE;
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SET SESSION wsrep_sync_wait = 0;
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--connection node_4
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CREATE TABLE t1 (f1 INTEGER PRIMARY KEY) ENGINE=InnoDB;
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--connection node_2
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--let $wait_condition = SELECT COUNT(*) = 1 FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 't1';
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--source include/wait_condition.inc
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# Step #2. Force async slave to go non-primary
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SET GLOBAL wsrep_provider_options = 'gmcast.isolate=1';
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--connection node_1
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--source include/wait_until_connected_again.inc
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--let $wait_condition = SELECT VARIABLE_VALUE = 2 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size'
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--source include/wait_condition.inc
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# Step #3. Force async replication to fail by creating a replication event while the slave is non-prim
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--connection node_4
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INSERT INTO t1 VALUES (1),(2),(3),(4),(5);
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--connection node_2
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--sleep 5
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--let $value = query_get_value(SHOW SLAVE STATUS, Last_SQL_Error, 1)
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--connection node_1
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--disable_query_log
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--eval SELECT "$value" IN ("Error 'Unknown command' on query. Default database: 'test'. Query: 'BEGIN'", "Node has dropped from cluster") AS expected_error
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--enable_query_log
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# Step #4. Bring back the async slave and restart replication
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--connection node_2
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SET GLOBAL wsrep_provider_options = 'gmcast.isolate=0';
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--connection node_1
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--source include/wait_until_connected_again.inc
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--let $wait_condition = SELECT VARIABLE_VALUE = 3 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size'
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--source include/wait_condition.inc
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--connection node_2
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--source include/wait_until_ready.inc
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--source include/wait_until_connected_again.inc
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START SLAVE;
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# Confirm that the replication events have arrived
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--let $wait_condition = SELECT COUNT(*) = 5 FROM t1;
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--source include/wait_condition.inc
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--connection node_4
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DROP TABLE t1;
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--sleep 2
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--connection node_2
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--let $wait_condition = SELECT COUNT(*) = 0 FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 't1';
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--source include/wait_condition.inc
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STOP SLAVE;
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RESET SLAVE ALL;
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CALL mtr.add_suppression("Slave SQL: Error 'Unknown command' on query");
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CALL mtr.add_suppression("Slave: Unknown command Error_code: 1047");
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CALL mtr.add_suppression("(Transport endpoint|Socket) is not connected");
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CALL mtr.add_suppression("Slave SQL: Error in Xid_log_event: Commit could not be completed, 'Deadlock found when trying to get lock; try restarting transaction', Error_code: 1213");
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CALL mtr.add_suppression("Slave SQL: Node has dropped from cluster, Error_code: 1047");
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--connection node_4
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--source include/kill_binlog_dump_threads.inc
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RESET MASTER;
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