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From "Doug Cutting (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-1042) Improve the handling of failed map output fetches
Date Wed, 28 Feb 2007 18:52:57 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-1042?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Doug Cutting updated HADOOP-1042:
---------------------------------

       Resolution: Fixed
    Fix Version/s: 0.12.0
           Status: Resolved  (was: Patch Available)

I committed this yesterday.  Thanks, Devaraj!

> Improve the handling of failed map output fetches
> -------------------------------------------------
>
>                 Key: HADOOP-1042
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1042
>             Project: Hadoop
>          Issue Type: Improvement
>          Components: mapred
>    Affects Versions: 0.11.2
>            Reporter: Devaraj Das
>         Assigned To: Devaraj Das
>             Fix For: 0.12.0
>
>         Attachments: 1042.new.patch, 1042.patch
>
>
> Currently, whenever fetch of a map output fails the corresponding MapOutputLocation is
added to a List datastructure for later retrial. But, if the failure was due to a lost task,
the entry that was added is not deleted. For such cases, unnecessary retrials will happen.
This situation should be prevented.

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