Bug #15450 MySQL Freezes and acts extremely unstable with MyISAM storage type on Debian 64
Submitted: 2 Dec 2005 22:11 Modified: 5 Jan 2006 7:14
Reporter: Ygor Lemos Email Updates:
Status: No Feedback Impact on me:
None 
Category:MySQL Server Severity:S1 (Critical)
Version:mysql-4.1.15-max OS:Linux (Debian - 2.6.8-11-amd64-generic)
Assigned to: CPU Architecture:Any

[2 Dec 2005 22:11] Ygor Lemos 
Description:
Well, my project just works fine with this version of MySQL when it was running on 32 bits architectures, but when i've installed MySQL at my Debian x86_64 running with a AMD64 processor, the database becomes extremely unstable.

Sometimes the whole database just lock itself and the processes must be killed with SIGKILL.

It occours by just making simply queryes, even select queries.

When i've changed my databases to innoDB the errors stopped.

But i really need MyISAM.

How to repeat:
Just install it normally on a Athlon 64 running Debian Sarge with 2.6.8-11-amd64-generic kernel and start to make queries with MyISAM Storage Type.
[3 Dec 2005 17:19] Valeriy Kravchuk 
Thank you for a problem report. Weird behaviour (hangs and deadlocks) on Debian and x86_64 was reported many times. See, for example, http://bugs.mysql.com/bug.php?id=8555
and http://bugs.mysql.com/bug.php?id=7254. 

It was decided that the problem is  caused by a bug in glibc for x86_64 (http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=314408). Please, check that reports. I believe, you hit exactly the same problem.
[4 Dec 2005 22:02] Ygor Lemos 
Does this bug occours in MySQL 5.0 too? If i upgrade MySQL it will become fixed? As i see, there is no correction for this problem! The patch found in one of the Debian discuss list just doesn't work because it try to diff inexistent system files (NPTL)....

I thnk that the other users wth this environment are with the same trouble to correct their DB problems....

Thanks Again, 

Ygor Lemos
[5 Dec 2005 7:14] Valeriy Kravchuk 
As I informed you, it looks like the real reason is the problem in some versions of glibc for x86_64, not in MySQL code itself. Please, inform about the version you are using.
[6 Jan 2006 0:00] 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".