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From "eric baldeschwieler (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-181) task trackers should not restart for having a late heartbeat
Date Thu, 10 Aug 2006 23:37:17 GMT
    [ http://issues.apache.org/jira/browse/HADOOP-181?page=comments#action_12427373 ] 
            
eric baldeschwieler commented on HADOOP-181:
--------------------------------------------

On reintegrating lost task trackers...

It does seem like we should do this to me, but we need to make sure we reason through how
this effects corner cases, what invariants the system does maintain and so on.

I suggest we work this through, and then go forward with this patch (modified if we find any
corner cases) and post the reasoning, so we can review it as this logic evolves.  (And update
any existing documentation in this area of course...)


> task trackers should not restart for having a late heartbeat
> ------------------------------------------------------------
>
>                 Key: HADOOP-181
>                 URL: http://issues.apache.org/jira/browse/HADOOP-181
>             Project: Hadoop
>          Issue Type: Bug
>          Components: mapred
>            Reporter: Owen O'Malley
>         Assigned To: Devaraj Das
>             Fix For: 0.6.0
>
>         Attachments: lost-heartbeat.patch
>
>
> TaskTrackers should not close and restart themselves for having a late heartbeat. The
JobTracker should just accept their current status.

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