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From "Chris Douglas (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4714) map tasks timing out during merge phase
Date Sun, 30 Nov 2008 02:30:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4714?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12651774#action_12651774
] 

Chris Douglas commented on HADOOP-4714:
---------------------------------------

Such a change would also be much easier to port to older branches...

> map tasks timing out during merge phase
> ---------------------------------------
>
>                 Key: HADOOP-4714
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4714
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.18.1
>            Reporter: Christian Kunz
>            Assignee: Jothi Padmanabhan
>         Attachments: hadoop-4714.patch
>
>
> With compression of transient data turned on some parts of the merge phase seem to not
report progress enough.
> We see a lot of task failures during the merge phase, most of them timing out (even with
a 20 min timeout)

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