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From "Amareshwari Sriramadasu (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4246) Reduce task copy errors may not kill it eventually
Date Fri, 03 Oct 2008 03:40:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4246?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12636517#action_12636517
] 

Amareshwari Sriramadasu commented on HADOOP-4246:
-------------------------------------------------

The test failure for TestDatanodeDeath.testDatanodeDeath is not related to the patch.

> Reduce task copy errors may not kill it eventually
> --------------------------------------------------
>
>                 Key: HADOOP-4246
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4246
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.19.0
>            Reporter: Amareshwari Sriramadasu
>            Assignee: Amareshwari Sriramadasu
>            Priority: Blocker
>             Fix For: 0.19.0
>
>         Attachments: patch-4246.txt, patch-4246.txt, patch-4246.txt, patch-4246.txt
>
>
> maxFetchRetriesPerMap in reduce task can be zero some times (when maxMapRunTime is less
than 4 seconds or mapred.reduce.copy.backoff is less than 4). This will not count reduce task
copy errors to kill it eventually.

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