[jira] [Commented] (MAPREDUCE-1688) A failing retry'able notification in JobEndNotifier can affect notifications of other jobs.

["Ravi Prakash (Commented) (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MAPREDUCE-1688?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13124171#comment-13124171 ] 

Ravi Prakash commented on MAPREDUCE-1688:
-----------------------------------------

@Vinod : Can't we set the maximum amount of time an HttpMethod can wait when we create it in JobEndNotifier.httpNotification() ? Perhaps using the parameters defined in http://hc.apache.org/httpclient-3.x/preference-api.html ?


                
> A failing retry'able notification in JobEndNotifier can affect notifications of other jobs.
> -------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-1688
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1688
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: jobtracker
>    Affects Versions: 0.20.1
>            Reporter: Vinod Kumar Vavilapalli
>
> The JobTracker puts all the notification commands into a delay-queue.  It has a single thread that loops through this queue and sends out the notifications.  When it hits failures with any notification which is configured to be retired via {{job.end.retry.attempts}} and {{job.end.retry.interval}}, the notification is queued back again. A single notification with sufficiently large number of configured retries and which consistently fails will affect other notifications in the queue.

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