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Posted to dev@oodt.apache.org by "Mattmann, Chris A (388J)" <ch...@jpl.nasa.gov> on 2012/04/11 18:00:05 UTC
Re: [jira] [Created] (OODT-439) Jobs Are Dropped When Queue Size Is
Full
Thanks Mike!
On Apr 11, 2012, at 8:13 AM, Michael Cayanan (Created) (JIRA) wrote:
> Jobs Are Dropped When Queue Size Is Full
> ----------------------------------------
>
> Key: OODT-439
> URL: https://issues.apache.org/jira/browse/OODT-439
> Project: OODT
> Issue Type: Bug
> Components: resource manager
> Affects Versions: 0.3, 0.4
> Reporter: Michael Cayanan
> Priority: Minor
> Fix For: 0.5
>
>
> When the queue has reached the max queue size, a message is logged by the Scheduler saying there is a Job Queue Exception adding a job to the queue, and then the job is dropped.
>
> The following case will produce the issue:
>
> 1) queue is full
> 2) scheduler pops job from queue and begins trying to find a node for job
> 3) queue now has 1 open slot
> 4) another job is given to the resource manager and is placed in the queue
> 5) queue is now full again
> 6) scheduler fails to schedule popped job
> 7) scheduler pushes job back into the queue
> 8) queue is full so exception is thrown and job is lost
>
> The job needs to get re-queued in this case.
>
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Chris Mattmann, Ph.D.
Senior Computer Scientist
NASA Jet Propulsion Laboratory Pasadena, CA 91109 USA
Office: 171-266B, Mailstop: 171-246
Email: chris.a.mattmann@nasa.gov
WWW: http://sunset.usc.edu/~mattmann/
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Adjunct Assistant Professor, Computer Science Department
University of Southern California, Los Angeles, CA 90089 USA
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