211 lines
6.1 KiB
Plaintext
211 lines
6.1 KiB
Plaintext
# See if slave restarts the transaction after failing on an InnoDB deadlock error.
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# Note: testing what happens when too many retries is possible, but
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# needs large waits when running with --debug, so we don't do it.
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# The same way, this test may not test what is expected when run
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# under Valgrind, timings are too short then (with --valgrind I
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# (Guilhem) have seen the test manage to provoke lock wait timeout
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# error but not deadlock error; that is ok as code deals with the two
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# errors in exactly the same way.
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--source include/master-slave.inc
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#create a new connection to the slave
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--connect (slave2, 127.0.0.1, root, ,test, $SLAVE_MYPORT,)
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# 0) Prepare tables and data
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--echo *** Prepare tables and data ***
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connection master;
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eval CREATE TABLE t1 (a INT NOT NULL, KEY(a)) ENGINE=$engine_type;
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eval CREATE TABLE t2 (a INT) ENGINE=$engine_type;
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eval CREATE TABLE t3 (a INT NOT NULL, KEY(a)) ENGINE=$engine_type;
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sync_slave_with_master;
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SHOW CREATE TABLE t1;
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SHOW CREATE TABLE t2;
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SHOW CREATE TABLE t3;
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SELECT @@GLOBAL.slave_transaction_retries;
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SELECT @@GLOBAL.innodb_lock_wait_timeout;
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--source include/stop_slave.inc
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connection master;
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# Save position of BEGIN
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let $master_pos_begin= query_get_value(SHOW MASTER STATUS, Position, 1);
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BEGIN;
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INSERT INTO t1 VALUES (1);
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# We make a long transaction here
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INSERT INTO t2 VALUES (2), (2), (2), (2), (2), (2), (2), (2), (2), (2);
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INSERT INTO t3 VALUES (3);
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COMMIT;
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save_master_pos;
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--echo
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# 1) Test deadlock
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# Block slave SQL thread, wait retries of transaction, unlock slave before lock timeout
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--echo *** Test deadlock ***
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connection slave;
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BEGIN;
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SELECT * FROM t1 FOR UPDATE;
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# Save value of 'count_transactions_retries' before deadlock
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let $count_transactions_retries= query_get_value(
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"select count_transactions_retries from
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performance_schema.replication_applier_status",count_transactions_retries, 1);
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--connection slave2
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--source include/start_slave.inc
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--connection slave
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# Wait until SQL thread blocked: 'count_transactions_retries' will be incremented
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let $status_col= count_transactions_retries;
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let $status_col_value= $count_transactions_retries;
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let $table=replication_applier_status;
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let $status_col_comparsion= >;
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--source include/wait_for_rpl_pfs_status.inc
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SELECT COUNT(*) FROM t2;
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COMMIT;
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--echo
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--echo # Test that the performance schema column shows > 0 values.
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--echo
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--let $assert_text= current number of retries should be more than the value saved before deadlock.
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--let $assert_cond= [SELECT COUNT_TRANSACTIONS_RETRIES FROM performance_schema.replication_applier_status, COUNT_TRANSACTIONS_RETRIES, 1] > "$count_transactions_retries"
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--source include/assert.inc
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source include/check_slave_is_running.inc;
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sync_with_master;
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# Check the data
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SELECT * FROM t1;
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SELECT * FROM t3;
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--echo
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# 2) Test lock wait timeout
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# Block slave and wait lock timeout error
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--echo *** Test lock wait timeout ***
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connection slave;
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--source include/stop_slave.inc
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DELETE FROM t2;
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# Set slave position to the BEGIN log event
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RESET MASTER;
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--replace_result $master_pos_begin MASTER_POS_BEGIN
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eval CHANGE MASTER TO MASTER_LOG_POS=$master_pos_begin;
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BEGIN;
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# Hold lock
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SELECT * FROM t1 FOR UPDATE;
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# Wait until slave stopped with error 'Lock wait timeout exceeded'
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--connection slave2
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START SLAVE;
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--connection slave
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let $slave_sql_errno= 1205;
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--source include/wait_for_slave_sql_error.inc
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SELECT COUNT(*) FROM t2;
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COMMIT;
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--source include/start_slave.inc
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sync_with_master;
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# Check data from tables
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SELECT * FROM t1;
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SELECT * FROM t3;
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# Check that no error is reported
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source include/check_slave_is_running.inc;
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--echo
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# 3) Test lock wait timeout and purged relay log
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# Set max_relay_log_size=0, block slave and wait lock timeout error.
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# Restart slave and check that no erros appear
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--echo *** Test lock wait timeout and purged relay logs ***
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connection slave;
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SET @my_max_relay_log_size= @@global.max_relay_log_size;
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SET global max_relay_log_size=0;
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--source include/stop_slave.inc
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DELETE FROM t2;
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# Set slave position to the BEGIN log event
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RESET MASTER;
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--replace_result $master_pos_begin MASTER_POS_BEGIN
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eval CHANGE MASTER TO MASTER_LOG_POS=$master_pos_begin;
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BEGIN;
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# Hold lock
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SELECT * FROM t1 FOR UPDATE;
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# Wait until slave stopped with error 'Lock wait timeout exceeded'
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--connection slave2
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START SLAVE;
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--connection slave
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let $slave_sql_errno= 1205;
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--source include/wait_for_slave_sql_error.inc
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SELECT COUNT(*) FROM t2;
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COMMIT;
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--source include/start_slave.inc
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sync_with_master;
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# Check data from tables
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SELECT * FROM t1;
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SELECT * FROM t3;
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# Check that no error is reported
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source include/check_slave_is_running.inc;
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--echo
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#
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# bug#11748510/36524 incident of deadlock on slave is overdramatized
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#
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# Observe that the slave stopped when the number of transation retries
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# exceeds @@global.slave_transaction_retries
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#
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connection master;
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--echo *** Test the deadlock warning to be escalated into the error ***
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delete from t1;
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delete from t2;
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delete from t3;
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sync_slave_with_master;
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# make sure slave's unilateral row gone as well
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delete from t1;
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delete from t2;
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delete from t3;
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# the first attempt to run a deadlock scenario of p 1) leads to the error
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set @save.slave_transaction_retries= @@global.slave_transaction_retries;
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set @@global.slave_transaction_retries= 0;
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source include/stop_slave.inc;
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connection master;
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BEGIN;
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INSERT INTO t1 VALUES (1);
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# We make a long transaction here
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INSERT INTO t2 VALUES (2), (2), (2), (2), (2), (2), (2), (2), (2), (2);
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INSERT INTO t3 VALUES (3);
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COMMIT;
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connection slave;
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BEGIN;
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SELECT count(*) as zero FROM t1 FOR UPDATE;
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--connection slave2
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START SLAVE;
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--connection slave
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--echo *** Now the slave must be stopped due to timeout ***
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let $slave_sql_errno= 1205; # ER_LOCK_TIMEOUT
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let $show_slave_sql_error= 0;
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source include/wait_for_slave_sql_error.inc;
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rollback;
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set @@global.slave_transaction_retries= @save.slave_transaction_retries;
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source include/start_slave.inc;
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# Clean up
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--echo *** Clean up ***
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connection master;
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DROP TABLE t1,t2,t3;
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sync_slave_with_master;
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SET global max_relay_log_size= @my_max_relay_log_size;
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CALL mtr.add_suppression(".*worker thread retried transaction.*");
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CALL mtr.add_suppression(".*The slave coordinator and worker threads are stopped.*");
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--echo End of 5.1 tests
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--source include/rpl_end.inc
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