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From "Thomas Jungblut (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HAMA-498) BSPTask should periodically ping its parent.
Date Fri, 24 Feb 2012 14:14:49 GMT

    [ https://issues.apache.org/jira/browse/HAMA-498?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13215619#comment-13215619
] 

Thomas Jungblut commented on HAMA-498:
--------------------------------------

Yes. Back a few months ago the cleanup hasn't thrown any exception. 

So your solution is much better. Do you mind patching the local runner and the yarn task runner?
Would be great if they are consistent.
                
> BSPTask should periodically ping its parent.
> --------------------------------------------
>
>                 Key: HAMA-498
>                 URL: https://issues.apache.org/jira/browse/HAMA-498
>             Project: Hama
>          Issue Type: Sub-task
>          Components: bsp
>    Affects Versions: 0.4.0
>            Reporter: Edward J. Yoon
>            Assignee: Suraj Menon
>              Labels: newbie
>             Fix For: 0.5.0
>
>
> As described in http://wiki.apache.org/hama/GroomServerFaultTolerance
> BSPTask should periodically ping its parent 'GroomServer' for their health status.
> 1. If Tasks are unable to ping their parent 'GroomServer', it should be killed themselves.
> 2. And, if GroomServer does not receive ping from the childs, GroomServer should check
whether that child is running.
> You don't need to implement recovery logic in this issue.

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