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MDEV-33106 innodb.innodb-lock-inherit-read_commited times out

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Sometimes, in MariaDB Server 10.5 but apparently not in later branches,
the test would hang because con1 and con2 would be blocked in
debug_sync (for example, lock_wait_suspend_thread_enter and
row_ins_sec_index_entry_dup_locks_created) and therefore blocking
the purge of transactions from completing.

To prevent an occasional DEBUG_SYNC induced hang in the test, we will
wait for everything to be purged, except the last 2 transactions.

This change should be null-merged to 10.6, because the test is not
failing in 10.6 or later major versions.
This commit is contained in:
Marko Mäkelä
2024-10-09 11:26:12 +03:00
parent 23820f1d79
commit 8981ee238a
2 changed files with 3 additions and 3 deletions
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4
mysql-test/suite/innodb/r/innodb-lock-inherit-read_commited.result
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@ -40,7 +40,7 @@ connection purge_control;
COMMIT;
disconnect purge_control;
connection default;
InnoDB 0 transactions not purged
SET GLOBAL innodb_max_purge_lag_wait=2;
SET debug_sync = 'now SIGNAL con2_go WAIT_FOR con2_insert_done';
SET debug_sync = 'now SIGNAL con1_go WAIT_FOR con1_insert_done';
SET debug_sync = 'now SIGNAL con1_finish';
@ -99,7 +99,7 @@ connection purge_control;
COMMIT;
disconnect purge_control;
connection default;
InnoDB 0 transactions not purged
SET GLOBAL innodb_max_purge_lag_wait=2;
SET debug_sync = 'now SIGNAL con2_go WAIT_FOR con2_insert_done';
SET debug_sync = 'now SIGNAL con1_go WAIT_FOR con1_insert_done';
SET debug_sync = 'now SIGNAL con1_finish';