Comments on: Recall of Percona Server 5.1.47-11.0

By: Aleksandr Kuzminsky

Aleksandr Kuzminsky — Wed, 14 Jul 2010 12:57:56 +0000

Jim,

New version of Percona-Server-shared-compat is uploaded. This issue is fixed in it.
Could you please try?

By: peter

peter — Tue, 13 Jul 2010 21:32:29 +0000

Jim,

Please do not use commits to report “bugs” there is bugs database for that on launchpad:
https://bugs.launchpad.net/percona-server/+filebug

It looks like name for package is changed so you better to leave old package or remove it and install new one.

By: Jim B.

Jim B. — Tue, 13 Jul 2010 19:41:44 +0000

[root@sql-poll ~]# yum install Percona-Server-shared-compat
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* addons: mirror.vcu.edu
* base: centos.mirror.nac.net
* epel: mirror.ipnode.info
* extras: mirrors.rit.edu
* updates: mirror.cogentco.com
Setting up Install Process
Resolving Dependencies
–> Running transaction check
—> Package Percona-Server-shared-compat.x86_64 0:5.1.43-3 set to be updated
–> Finished Dependency Resolution

Dependencies Resolved

======================================================================================================================================
Package Arch Version Repository Size
======================================================================================================================================
Installing:
Percona-Server-shared-compat x86_64 5.1.43-3 percona 4.9 M

Transaction Summary
======================================================================================================================================
Install 1 Package(s)
Update 0 Package(s)
Remove 0 Package(s)

Total size: 4.9 M
Is this ok [y/N]: y
Downloading Packages:
Running rpm_check_debug
Running Transaction Test
Finished Transaction Test

Transaction Check Error:
file /usr/lib64/libmysqlclient.so.16.0.0 from install of Percona-Server-shared-compat-5.1.43-3.x86_64 conflicts with file from package Percona-Server-shared-51-5.1.47-rel11.2.53.rhel5.x86_64
file /usr/lib64/libmysqlclient_r.so.16.0.0 from install of Percona-Server-shared-compat-5.1.43-3.x86_64 conflicts with file from package Percona-Server-shared-51-5.1.47-rel11.2.53.rhel5.x86_64

Error Summary
————-

By: peter

peter — Tue, 06 Jul 2010 17:24:02 +0000

Here is the bug filed with MySQL on this issue which in the end was exposed as crash with this patch
http://bugs.mysql.com/bug.php?id=55032

By: peter

peter — Tue, 06 Jul 2010 16:59:33 +0000

Gary – did you try with space after first “(” ? This is what caused problems things like (select 1) worked OK

By: Mat

Mat — Fri, 02 Jul 2010 21:16:53 +0000

Thanks for the heads up, last week we started seeing this type of crashing behavior on our database servers after they were upgraded to the latest Percona build. I could not for the life of me figure out why certain servers were crashing more often than others, but the query caching issue seems to explain it perfectly. We just downgraded our servers to a previous build and that seemed to fix the issue.

That will teach me to leave a Yum repo enabled

By: peter

peter — Fri, 02 Jul 2010 00:01:22 +0000

Gary,

It would not crash for every query only for some. It is great if it does not crash for you. Bug report contains repeatable example (which was added to test suite to trigger the crash

By: gary

gary — Wed, 30 Jun 2010 15:54:55 +0000

Ok, that is odd, I could not reproduce on our production server. However we updated anyhow. Thanks for the info.

By: peter

peter — Wed, 30 Jun 2010 15:19:06 +0000

Gary,

Unfortunately this is NOT the case. Anyone with query cache enabled running these specific query types if affected.

By: gary

gary — Wed, 30 Jun 2010 14:49:44 +0000

Just to be clear, will this only be an issue if we set query_cache_strip_comments=on? If we stick with default value, then this bug should not have an affect?

Thanks for the quick update.

Gary