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From "Suraj Menon (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HAMA-498) BSPTask should periodically ping its parent.
Date Tue, 28 Feb 2012 13:12:48 GMT

     [ https://issues.apache.org/jira/browse/HAMA-498?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Suraj Menon updated HAMA-498:
-----------------------------

    Status: Patch Available  (was: Open)

The patch uploaded has few things to be considered:
- The test cases are passing most of the times. It still depends on scheduling of certains
threads.
- I still see killed tasks is runningTasks at Groomserver.
- LocalBSPRunner and the YARNRunner has been also changed with the new way of handling errors
in BSP jobs.
                
> 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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