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From "Jothi Padmanabhan (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4714) map tasks timing out during merge phase
Date Tue, 02 Dec 2008 14:46:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4714?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12652386#action_12652386
] 

Jothi Padmanabhan commented on HADOOP-4714:
-------------------------------------------

     [exec]
     [exec] -1 overall.
     [exec]
     [exec]     +1 @author.  The patch does not contain any @author tags.
     [exec]
     [exec]     -1 tests included.  The patch doesn't appear to include any new or modified
tests.
     [exec]                         Please justify why no tests are needed for this patch.
     [exec]
     [exec]     +1 javadoc.  The javadoc tool did not generate any warning messages.
     [exec]
     [exec]     +1 javac.  The applied patch does not increase the total number of javac compiler
warnings.
     [exec]
     [exec]     +1 findbugs.  The patch does not introduce any new Findbugs warnings.
     [exec]
     [exec]
     [exec]

ant testpach and ant test passed for all three (18, 19 branches and trunk)

> 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-4714-18.patch, hadoop-4714-19.patch, hadoop-4714-v1.patch,
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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