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From "Yoram Arnon (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-181) task trackers should not restart for having a late heartbeat
Date Thu, 10 Aug 2006 07:31:16 GMT
    [ http://issues.apache.org/jira/browse/HADOOP-181?page=comments#action_12427126 ] 
            
Yoram Arnon commented on HADOOP-181:
------------------------------------

Eric, we don't get many lost task trackers in our sort benchmark any more, so I don't expect
a significant improvement.

In other jobs though, we do get the occasional lost task tracker. While every such case is
a bug when nothing 'real' happens (HW error, network etc.) hunting every last one of them
down is going to take quite a while.
Minimizing the damage caused by such a glitch would be welcome if it doesn't cause adverse
side effects.

> 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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