Bug #9712 Difference default / PS protocol for lost connection on IRIX + Mac + hpita2
Submitted: 7 Apr 2005 10:21 Modified: 9 Jan 2006 9:07
Reporter: Joerg Bruehe Email Updates:
Status: Closed Impact on me:
Category:MySQL Server Severity:S3 (Non-critical)
Version:5.0.4 and up OS:Other (IRIX (32+64) + Mac OS X + HP-UX 11.23)
Assigned to: Magnus Blåudd

[7 Apr 2005 10:21] Joerg Bruehe
First release (test) build for 5.0.4, based on ChangeSet
  1.1882.1.3 05/04/06 23:12:10 serg@serg.mylan +5 -0
  after merge fix

Basically this is still the issue of bug#8866, but due to the several fixes and long history there I rather open a new entry.

On "octane2" (IRIX, bith 32 and 63 bit build) and on both "powermac" (Mac OS X) machines, a "default" build fails in test "kill" when run in default mode, '--ps-protocol' passes.
In all 4 cases, the difference is:
*** r/kill.result       Thu Apr  7 02:25:36 2005
--- r/kill.reject       Thu Apr  7 04:46:58 2005
*** 6,12 ****
  kill @id;
  select 1;
- Got one of the listed errors
  select ((@id := kill_id) - kill_id) from t1;
  ((@id := kill_id) - kill_id)
--- 6,11 ----

How to repeat:
Build + test on either of these.
[27 Apr 2005 18:56] 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:

[28 Apr 2005 16:07] Jim Winstead
Patch doesn't work. It passes sometimes, but fails more often than not.
[27 May 2005 9:16] Joerg Bruehe
Build of 5.0.6, based on ChangeSet
  1.1901 05/05/26 15:21:01 joerg@mysql.com +1 -0
  Added a missing "make clean" to the RPM "spec" file which had caused the original 4.1.12 RPMs to be broken.
  (bug#10674, bug#10681)

This bug now also occurs on hpita2-64bit (in a "max" build, while "debug" passed!).
[8 Jun 2005 18:42] Jim Winstead
this is the infamous kill test failure.

it has something to do with when thd->killed gets noticed by the thread being killed, and whether it interrupts a read/write that may be in process.

on our powermacg5, the test passes about 10% of the time, and fails with either one of two other messages. (no error message, or an error on the wrong statement.)
[24 Jun 2005 17:06] Jim Winstead
See also Bug #11549.
[8 Aug 2005 16:42] Joerg Bruehe
This seems a different symptom of the same underlying problem:

kill                           [ fail ]

Errors are (from PATH/mysqltest-time) :
At line 31: query 'select 1' succeeded - should have failed with errno 2006...
At line 34: query 'select ((@id := kill_id) - kill_id) from t1' failed: 2013: Lost connection to MySQL server during query
(the last lines may be the most important ones)

Occurred in 5.0.11 on
powermacg4-5.0-max.log   normal
xserve-5.0-pro.log   normal
xserve-64bit-5.0-debug.log   normal
(also in previous versions, but not listed)
[9 Jan 2006 9:07] Magnus Blåudd
Problem does not exist anymore. The server will now say "goodbye" before closing the connection to the server. Even if it's been compiled with -DSIGNAL_WITH_VIO_CLOSE as was the case on the affected platforms in this bug report.
[19 Jan 2007 22:52] BJ Dierkes
RedHat Enterprise Linux 4 (i386)

Test Fails as described above:

kill                           [ fail ]  timeout

Aborting: kill failed in default mode. To continue, re-run with '--force'.
Stopping All Servers
Shutting-down Instance Manager
make: *** [test] Error 1