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From "Amar Kamat (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-1482) Better handling of task diagnostic information stored in the TaskInProgress
Date Wed, 03 Mar 2010 12:18:27 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-1482?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12840618#action_12840618
] 

Amar Kamat commented on MAPREDUCE-1482:
---------------------------------------

There is one nit with the latest patch :
- logging the newly set diagnostic-information or state-string would essentially mean logging
in heartbeat, which is be bad. 
 

> Better handling of task diagnostic information stored in the TaskInProgress
> ---------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-1482
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1482
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: jobtracker
>            Reporter: Amar Kamat
>            Assignee: Amar Kamat
>         Attachments: mapreduce-1482-v1.1.patch, mapreduce-1482-v1.2.patch, mapreduce-1482-v1.3.patch
>
>
> Task diagnostic information can be very large at times eating up Jobtracker's memory.
There should be some way to avoid storing large error strings in JobTracker.

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