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From "Mattmann, Chris A (388J)" <chris.a.mattm...@jpl.nasa.gov>
Subject Re: [jira] [Created] (OODT-439) Jobs Are Dropped When Queue Size Is Full
Date Wed, 11 Apr 2012 16:00:05 GMT
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.
> 
> --
> This message is automatically generated by JIRA.
> If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
> For more information on JIRA, see: http://www.atlassian.com/software/jira
> 
> 


++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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/
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Adjunct Assistant Professor, Computer Science Department
University of Southern California, Los Angeles, CA 90089 USA
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++


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