[jira] Commented: (HADOOP-3217) [HOD] Be less agressive when querying job status from resource manager.

["Arun C Murthy (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-3217?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12645226#action_12645226 ] 

Arun C Murthy commented on HADOOP-3217:
---------------------------------------

I messed up the commit msg, so the subversion commits are available here:
trunk: http://svn.apache.org/viewcvs?view=rev&rev=705420 
branch-19: http://svn.apache.org/viewcvs?view=rev&rev=705422
branch-18: http://svn.apache.org/viewcvs?view=rev&rev=705423
branch-17: http://svn.apache.org/viewcvs?view=rev&rev=705426

> [HOD] Be less agressive when querying job status from resource manager.
> -----------------------------------------------------------------------
>
>                 Key: HADOOP-3217
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3217
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: contrib/hod
>    Affects Versions: 0.16.2
>            Reporter: Hemanth Yamijala
>            Assignee: Hemanth Yamijala
>            Priority: Blocker
>             Fix For: 0.17.3, 0.18.2
>
>         Attachments: HADOOP-3217, HADOOP-3217.patch.0.17, HADOOP-3217.patch.0.17, HADOOP-3217.patch.0.17
>
>
> After a job is submitted, HOD queries torque periodically until it finds the job to be running / completed (due to error). The initial rate of query is once every 0.5 seconds for 20 times, and then once every 10 seconds. This is probably a tad too aggressive as we find that Torque sometimes returns some odd errors under heavy load in the cluster (HADOOP-3216). It may be better to query at a more relaxed rate. 

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