Type:
Bug
Priority:
Major
Resolution:
Fixed
Affects Version/s:
10.5 , 10.6 , 10.11 , 11.0(EOL) , 11.1(EOL) , 11.2(EOL) , 11.3(EOL)
In an addition to test rpl.rpl_parallel_sbm added by MDEV-32265 , the test uses sleep statements alone to test Seconds_Behind_Master with delayed replication. On slow running machines, the test can pass the intended MASTER_DELAY duration and Seconds_Behind_Master can become 0, when the test expects the transaction to still be actively in a delaying state.
The test failure resembles the following:
rpl.rpl_parallel_sbm 'mix' w20 [ fail ]
Test ended at 2024-02-20 10:27:35
CURRENT_TEST: rpl.rpl_parallel_sbm
mysqltest: At line 85: Seconds_Behind_Master did not increase after sleeping, but should have
And the following patch reproduces this consistently
diff --git a/mysql-test/suite/rpl/t/rpl_parallel_sbm.test b/mysql-test/suite/rpl/t/rpl_parallel_sbm.test
index 58c0db15e47..5baf6a56487 100644
--- a/mysql-test/suite/rpl/t/rpl_parallel_sbm.test
+++ b/mysql-test/suite/rpl/t/rpl_parallel_sbm.test
@@ -77,6 +77,10 @@ if (`SELECT $sbm_trx1_arrive > ($seconds_since_idling + 1)`)
--echo # Sleeping 1s to increment SBM
sleep 1;
+--disable_query_log
+sleep 4;
+--enable_query_log
+
--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`)
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