Bug #71647 Crash: Semaphore wait
Submitted: 10 Feb 2014 8:22 Modified: 20 Mar 16:55
Reporter: Tom Sommer Email Updates:
Status: No Feedback Impact on me:
Category:MySQL Server Severity:S1 (Critical)
Version:5.6.16 OS:Linux (CentOS 6, 64bit)
Assigned to: CPU Architecture:Any
Tags: crash, Semaphore

[10 Feb 2014 8:22] Tom Sommer
MySQL server crash.

InnoDB: Error: semaphore wait has lasted > 600 seconds

Started happening after upgrade from 5.5 to 5.6.

Also happened in 5.6.15

How to repeat:
[10 Feb 2014 8:25] Tom Sommer
Possible duplicate of #71511 (but unsure)
[12 Feb 2014 16:14] Hartmut Holzgraefe
The server has most likely enabled innodb monitor output to error log prior to finally giving up on the semaphore wait, can we see that part of the error log?
[12 Feb 2014 17:36] Tom Sommer
Is this part not in the attached files?
[12 Feb 2014 17:54] Hartmut Holzgraefe
Private attachment maybe?

These are not visible to me ...
[12 Mar 2015 22:02] michael Walker
Seem to have the same thing going on... Server version: 5.5.42-cll-lve - MySQL Community Server (GPL) by Atomicorp

I'm not sure but this may have happened in the previous version as well ( 5.1? )  Getting one of these crashes every month or so.
[14 Apr 2016 6:26] monty solomon
May be a duplicate of bug #73890
[20 Feb 16:55] Miguel Solorzano
Please check duplicate with https://bugs.mysql.com/bug.php?id=73890. Thanks.
[21 Mar 1:00] 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
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