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From "Suraj Menon (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HAMA-498) BSPTask should periodically ping its parent.
Date Fri, 02 Mar 2012 18:09:59 GMT

    [ https://issues.apache.org/jira/browse/HAMA-498?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13221113#comment-13221113

Suraj Menon commented on HAMA-498:

First of all sorry I couldn't look into these matters yet; got a little busy with work. Good
news is that Friday is here. I would be uploading the changes for 498 and 445 soon.I think
most of the suggested changes were comparatively minor and test related. It is better that
I don't slow you down on your work. 

I forgot to mention in the previous posts that I had fixed the problem of open port 40000
by not sublclassing from HamaTestCase and subclassing from TestCase instead. I want to make
sure if that what you saw in netstat is a  side-effect of HAMA-498 test cases. I am not starting
a BSPMaster instance(usually bound on the port) for the tests. This is the only part of changes
I foresee would take some time. Let me use the time difference between Berlin and Washington
DC before I get back to you tomorrow. ;)
> 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
>         Attachments: HAMA-498.patch
> 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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