diff options
Diffstat (limited to 'mysql-test/suite/rpl/t/rpl_parallel_sbm.test')
| -rw-r--r-- | mysql-test/suite/rpl/t/rpl_parallel_sbm.test | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/mysql-test/suite/rpl/t/rpl_parallel_sbm.test b/mysql-test/suite/rpl/t/rpl_parallel_sbm.test new file mode 100644 index 00000000..58c0db15 --- /dev/null +++ b/mysql-test/suite/rpl/t/rpl_parallel_sbm.test @@ -0,0 +1,218 @@ +# +# Ensure that Seconds_Behind_Master works correctly on the parallel replica. +# +--source include/master-slave.inc +--source include/have_log_bin.inc +--source include/have_debug.inc + +--echo # +--echo # MDEV-29639: Seconds_Behind_Master is incorrect for Delayed, Parallel Replicas +--echo # + +# This test ensures that after a delayed parallel slave has idled, i.e. +# executed everything in its relay log, the next event group that the SQL +# thread reads from the relay log will immediately be used in the +# Seconds_Behind_Master. In particular, it ensures that the calculation for +# Seconds_Behind_Master is based on the timestamp of the new transaction, +# rather than the last committed transaction. +# + +--connection slave +--source include/stop_slave.inc +--let $save_dbug= `SELECT @@GLOBAL.debug_dbug` +--let $save_parallel_mode= `SELECT @@GLOBAL.slave_parallel_mode` +set @@GLOBAL.debug_dbug= "d,negate_clock_diff_with_master"; +set @@GLOBAL.slave_parallel_mode= CONSERVATIVE; +--let $master_delay= 3 +--eval change master to master_delay=$master_delay, master_use_gtid=Slave_Pos +--source include/start_slave.inc + +--connection master +--let insert_ctr= 0 +create table t1 (a int); +create table t2 (a int); +--source include/sync_slave_sql_with_master.inc + +--echo # +--echo # Pt 1) Ensure SBM is updated immediately upon arrival of the next event + +--connection master +--echo # Sleep 2 to allow a buffer between events for SBM check +sleep 2; + +--let $ts_trx_before_ins= `SELECT UNIX_TIMESTAMP()` +--eval insert into t1 values ($insert_ctr) +--inc $insert_ctr +--source include/save_master_gtid.inc + +--connection slave + +--echo # Waiting for transaction to arrive on slave and begin SQL Delay.. +--let $wait_condition= SELECT count(*) FROM information_schema.processlist WHERE state LIKE 'Waiting until MASTER_DELAY seconds after master executed event'; +--source include/wait_condition.inc + +--echo # Validating SBM is updated on event arrival.. +--let $sbm_trx1_arrive= query_get_value(SHOW SLAVE STATUS, Seconds_Behind_Master, 1) +--let $seconds_since_idling= `SELECT UNIX_TIMESTAMP() - $ts_trx_before_ins` +if (`SELECT $sbm_trx1_arrive > ($seconds_since_idling + 1)`) +{ + --echo # SBM was $sbm_trx1_arrive yet shouldn't have been larger than $seconds_since_idling + 1 (for possible negative clock_diff_with_master) + --die Seconds_Behind_Master should reset after idling +} +--echo # ..done + + +--echo # MDEV-32265. At time of STOP SLAVE, if the SQL Thread is currently +--echo # delaying a transaction; then when the reciprocal START SLAVE occurs, +--echo # if the event is still to be delayed, SBM should resume accordingly + +--source include/stop_slave.inc +--source include/start_slave.inc + +--connection slave +--echo # Waiting for replica to resume the delay for the transaction +--let $wait_condition= SELECT count(*) FROM information_schema.processlist WHERE state LIKE 'Waiting until MASTER_DELAY seconds after master executed event'; +--source include/wait_condition.inc + +--echo # Sleeping 1s to increment SBM +sleep 1; + +--echo # Ensuring Seconds_Behind_Master increases after sleeping.. +--let $sbm_trx1_after_1s_sleep= query_get_value(SHOW SLAVE STATUS, Seconds_Behind_Master, 1) +if (`SELECT $sbm_trx1_after_1s_sleep <= $sbm_trx1_arrive`) +{ + --echo # ..failed + --die Seconds_Behind_Master did not increase after sleeping, but should have +} +--echo # ..done + +--source include/sync_with_master_gtid.inc + +--echo # +--echo # Pt 2) If the worker threads have not entered an idle state, ensure +--echo # following events do not update SBM + +--connection slave +LOCK TABLES t1 WRITE; + +--connection master +--echo # Sleep 2 to allow a buffer between events for SBM check +sleep 2; +--let $ts_trxpt2_before_ins= `SELECT UNIX_TIMESTAMP()` +--eval insert into t1 values ($insert_ctr) +--inc $insert_ctr +--echo # Sleep 3 to create gap between events +sleep 3; +--eval insert into t1 values ($insert_ctr) +--inc $insert_ctr +--let $ts_trx_after_ins= `SELECT UNIX_TIMESTAMP()` +--source include/save_master_pos.inc + +--connection slave +--echo # Wait for first transaction to complete SQL delay and begin execution.. +--let $wait_condition= SELECT count(*) FROM information_schema.processlist WHERE state LIKE 'Waiting for table metadata lock%' AND command LIKE 'Slave_Worker'; +--source include/wait_condition.inc + +--echo # Validate SBM calculation doesn't use the second transaction because worker threads shouldn't have gone idle.. +--let $sbm_after_trx_no_idle= query_get_value(SHOW SLAVE STATUS, Seconds_Behind_Master, 1) +--let $timestamp_trxpt2_arrive= `SELECT UNIX_TIMESTAMP()` +if (`SELECT $sbm_after_trx_no_idle < $timestamp_trxpt2_arrive - $ts_trx_after_ins - 1`) +{ + --let $cmpv= `SELECT $timestamp_trxpt2_arrive - $ts_trx_after_ins` + --echo # SBM $sbm_after_trx_no_idle was more recent than time since last transaction ($cmpv seconds) + --die Seconds_Behind_Master should not have used second transaction timestamp +} +--let $seconds_since_idling= `SELECT ($timestamp_trxpt2_arrive - $ts_trxpt2_before_ins)` +--echo # ..and that SBM wasn't calculated using prior committed transactions +if (`SELECT $sbm_after_trx_no_idle > ($seconds_since_idling + 1)`) +{ + --echo # SBM was $sbm_after_trx_no_idle yet shouldn't have been larger than $seconds_since_idling + 1 (for possible negative clock_diff_with_master) + --die Seconds_Behind_Master calculation should not have used prior committed transaction +} +--echo # ..done + +--connection slave +UNLOCK TABLES; +--source include/sync_with_master.inc + +--echo # Cleanup +--source include/stop_slave.inc +--eval CHANGE MASTER TO master_delay=0 +--source include/start_slave.inc + + +--echo # +--echo # MDEV-30619: Parallel Slave SQL Thread Can Update Seconds_Behind_Master with Active Workers +--echo # + +# This test ensures that a parallel slave will not update +# Seconds_Behind_Master after the SQL Thread has idled if the worker threads +# are still executing events. To test this, two events are executed on the +# primary with $sleep seconds in-between them. Once the second event begins +# execution on the replica, Seconds_Behind_Master is queried to ensure it +# reflects the value of the first transaction, rather than the second. + +--connection slave +--echo # Ensure the replica is fully idle before starting transactions +--let $wait_condition= SELECT count(*) FROM information_schema.processlist WHERE state LIKE 'Slave has read all relay log%'; +--source include/wait_condition.inc +--let $wait_condition= SELECT count(*)=2 FROM information_schema.processlist WHERE state LIKE 'Waiting for work from SQL thread'; +--source include/wait_condition.inc + +--echo # Lock t1 on slave so the first received transaction does not complete/commit +LOCK TABLES t1 WRITE; + +--connection master +--let $ts_t1_before_master_ins= `SELECT UNIX_TIMESTAMP()` +--eval insert into t1 values ($insert_ctr) +--inc $insert_ctr +--source include/save_master_gtid.inc + +--connection slave +--echo # Waiting for first transaction to begin.. +--let $wait_condition= SELECT count(*) FROM information_schema.processlist WHERE state LIKE 'Waiting for table metadata lock'; +--source include/wait_condition.inc + +--let $sbm_1= query_get_value(SHOW SLAVE STATUS, Seconds_Behind_Master, 1) + +--connection master +--let $sleep = 2 +--echo # Sleep $sleep sec to create a gap between events +sleep $sleep; +INSERT INTO t2 VALUES (1); +--source include/save_master_gtid.inc + +--connection slave +--echo # Waiting for second transaction to begin.. +--let $wait_condition= SELECT count(*) FROM information_schema.processlist WHERE state LIKE 'Waiting for prior transaction to start commit%'; +--source include/wait_condition.inc + +--let $sbm_2= query_get_value(SHOW SLAVE STATUS, Seconds_Behind_Master, 1) + +if (`SELECT $sbm_1 + $sleep > $sbm_2`) +{ + --echo # Seconds_Behind_Masters: $sbm_1 $sbm_2_0 + --die Two successive Seconds_Behind_Master timestamps must be separated by the sleep parameter value or greater +} + +--connection slave +UNLOCK TABLES; +--source include/sync_with_master_gtid.inc + + +--echo # +--echo # Cleanup + +--connection master +DROP TABLE t1, t2; +--source include/save_master_gtid.inc + +--connection slave +--source include/sync_with_master_gtid.inc +--source include/stop_slave.inc +--eval set @@GLOBAL.debug_dbug= "$save_dbug" +--evalp set @@GLOBAL.slave_parallel_mode= "$save_parallel_mode" +--source include/start_slave.inc + +--source include/rpl_end.inc +--echo # End of rpl_parallel_sbm.test |