Bug 817198 - Queueing/dequeueing thousands of jobs causes pbs scheduling to fail
Queueing/dequeueing thousands of jobs causes pbs scheduling to fail
Product: Fedora
Classification: Fedora
Component: torque (Show other bugs)
All Linux
unspecified Severity medium
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Assigned To: Steve Traylen
Fedora Extras Quality Assurance
Depends On:
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Reported: 2012-04-27 22:04 EDT by bob mckay
Modified: 2013-02-13 17:26 EST (History)
2 users (show)

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Doc Type: Bug Fix
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Last Closed: 2013-02-13 17:26:46 EST
Type: Bug
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Description bob mckay 2012-04-27 22:04:31 EDT
Description of problem:
User queues then dequeues thousands of jobs (using qdel). Any subsequent jobs queued fail to run. I can't find the exact reason - systemctl status of pbs_sched, pbs_server and munge are all OK, and the nodes are shown by xpbsmon as being active.

However munge appears to be in a bad state, despite systemctl status munge.service saying it's OK. If I run systemctl restart munge.service, the restart fails. So this may well be a munge bug at root. Unfortuantely I can't find any diagnostics directly confirming this.

This problem is reasonably serious, because at present, the only way I can recover from it is to reboot the host on which pbs_server is running.

I apologise in advance that it's going to be difficult for me to supply much more information on this, because killing our server to recreate the state is rather disruptive. (the user has been requested to stop queueing and dequeueing so many jobs). 

Version-Release number of selected component (if applicable): 3.0.3

How reproducible: Always

Steps to Reproduce:
1. User queues and dequeues thousands of jobs
2. Queue another job
Actual results:
Job fails to run

Expected results:
Job runs
(i.e. user actions shouldn't be able to crash pbs)

Additional info:
Not sure what to supply. 

In pbs_sched log I see many of:
04/28/2012 10:27:24;0040; pbs_sched;Job;170458.localhost;Not enough of the right
 type of nodes available

...but actually, there are plenty of nodes available according to xpbsmon

I don't see anything unusual at all in pbs_server log.
Comment 1 bob mckay 2012-04-27 22:19:20 EDT
Related munge bug report is https://bugzilla.redhat.com/show_bug.cgi?id=817199
Comment 2 Fedora End Of Life 2013-01-16 12:35:38 EST
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Comment 3 Fedora End Of Life 2013-02-13 17:26:50 EST
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