Bug #15934 im_daemon_life_cycle fails sporadically
Submitted: 22 Dec 2005 11:55 Modified: 9 Nov 2006 21:31
Reporter: Joerg Bruehe Email Updates:
Status: Closed Impact on me:
Category:Instance Manager Severity:S3 (Non-critical)
Version:5.0.18 OS:Linux (Linux (RHEL4, x86_64))
Assigned to: Alexander Nozdrin CPU Architecture:Any

[22 Dec 2005 11:55] Joerg Bruehe
This is a known effect, has just not been filed before (it seems).

This is different from bug#15603, which was a port conflict (solved).

im_daemon_life_cycle           [ fail ]

Errors are (from PATH/mysqltest-time) :
mysqltest: Failed in mysql_real_connect(): Can't connect to local MySQL server through socket 'PATH/im.sock' (2)
(the last lines may be the most important ones)

Ending Tests

Same effect in tests "im_life_cycle", "im_options_set", "im_options_unset", and "im_utils".

Occurs: all tests on "cane"

How to repeat:
Test suite failure.
[22 May 2006 12:34] Alexander Nozdrin
This bug is expected to be fixed by a patch for BUG#14106.
Please, re-verify it again.
[22 Jun 2006 23:00] Bugs System
No feedback was provided for this bug for over a month, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".
[28 Jul 2006 14:52] Joerg Bruehe
Sorry for the bad news: Still occurs with 5.0.24

im_daemon_life_cycle           [ fail ]

Errors are (from /PATH/mysqltest-time) :
mysqltest: Could not open connection 'default': 2002 Can't connect to local MySQL server through socket '/PATH/im.sock' (2)
(the last lines may be the most important ones)

Killing Possible Leftover Processes
===---===---===---===---===---===--- OCCURRED:
Do-rpm-rh-x86-64-5.0-pro-gpl.rhel4.log   normal
Do-rpm-rh-x86-64-5.0-pro.rhel4.log   normal
Do-rpm-rh-x86-64-5.0-standard.rhel4.log   normal

Same symptom in this build / these runs also in tests 
"im_life_cycle", "im_options_set", "im_options_unset", and "im_utils"
[29 Aug 2006 11:48] Alexander Nozdrin
A patch for this bug:

See BUG#21331 for more info.
[31 Aug 2006 9:56] Alexander Nozdrin
Merged into 5.0 tree, currently tagged 5.0.25;
merged into 5.1 tree, currently tagged 5.1.12-beta.
[31 Aug 2006 18:28] Paul DuBois
Test suite change. No changelog entry needed.
[3 Oct 2006 13:18] Alexander Nozdrin
The problem has not been completely solved.

The problem is in test case (im_daemon_life_cycle.imtest) -- it
should wait for Instance Manager to start accepting connections
after restart. Otherwise race condition occurs.
[3 Oct 2006 14:40] Bugs System
A patch for this bug has been committed. After review, it may
be pushed to the relevant source trees for release in the next
version. You can access the patch from:


ChangeSet@1.2274, 2006-10-03 18:42:59+04:00, anozdrin@alik. +4 -0
  Patch for BUG#15934: im_daemon_life_cycle fails sporadically.
  The problem was a race condition in a test case.
  The fix eliminates the race condition by explicit
  wait on UNIX socket to start accepting connections.
  The patch affects only test suite (i.e. does not touch
  server codebase).
[4 Oct 2006 2:11] Konstantin Osipov
Approved by email.
[2 Nov 2006 15:07] Alexander Nozdrin
Small improvement has been pushed into 5.0-rt tree.
[9 Nov 2006 21:31] Konstantin Osipov
Pushed into 5.0.29 and 5.1.13.
No documentation entry is needed as this is a test suite bug.