[MDEV-19423] Galera test failure on galera.MDEV-16509 Created: 2019-05-09  Updated: 2020-01-17  Resolved: 2019-05-15

Status: Closed
Project: MariaDB Server
Component/s: Galera, Tests
Affects Version/s: 10.4
Fix Version/s: 10.4.5

Type: Bug Priority: Major
Reporter: Jan Lindström (Inactive) Assignee: Jan Lindström (Inactive)
Resolution: Fixed Votes: 0
Labels: None

Issue Links:
Relates
relates to MDEV-21523 galera.MDEV-16509 MTR failed: timeout... Closed

 Description    

 SET DEBUG_SYNC = "now SIGNAL agac_continue_1";
 
 SET DEBUG_SYNC = "now SIGNAL agac_continue_2";

It may overwrite `agac_continue_1` with `agac_continue_2` before concurrent thread consumes it.

CURRENT_TEST: galera.MDEV-16509
 
--- /usr/share/mysql-test/suite/galera/r/MDEV-16509.result	2019-05-02 02:06:44.000000000 +0000
 
+++ /dev/shm/var/1/log/MDEV-16509.reject	2019-05-02 08:01:31.045202755 +0000
 
@@ -65,6 +65,8 @@
 
 SET DEBUG_SYNC = "now SIGNAL agac_continue_1";
 
 SET DEBUG_SYNC = "now SIGNAL agac_continue_2";
 
 connection node_1;
 
+Warnings:
 
+Warning	1639	debug sync point wait timed out
 
 connection node_1a;
 
 connection ctrl;
 
 SET DEBUG_SYNC = "RESET";


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