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From "Ravi Prakash (Resolved) (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (MAPREDUCE-1688) A failing retry'able notification in JobEndNotifier can affect notifications of other jobs.
Date Tue, 21 Feb 2012 15:52:41 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-1688?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ravi Prakash resolved MAPREDUCE-1688.
-------------------------------------

       Resolution: Fixed
    Fix Version/s: 0.23.1
         Assignee: Ravi Prakash

This has been fixed by MAPREDUCE-3028. Since each AM is now doing the job-end notification,
it has automatically been parallelized. Also, timeouts have been set in the HttpURLConnection
object.
                
> 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
>            Assignee: Ravi Prakash
>             Fix For: 0.23.1
>
>
> 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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