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From "Matei Zaharia (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-3131) enabling BLOCK compression for map outputs breaks the reduce progress counters
Date Tue, 24 Jun 2008 22:45:45 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3131?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12607791#action_12607791
] 

Matei Zaharia commented on HADOOP-3131:
---------------------------------------

Is anyone still interested in me writing a patch for 0.18, or have you fixed this issue in
IFile already?

> enabling BLOCK compression for map outputs breaks the reduce progress counters
> ------------------------------------------------------------------------------
>
>                 Key: HADOOP-3131
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3131
>             Project: Hadoop Core
>          Issue Type: Bug
>    Affects Versions: 0.17.0, 0.17.1, 0.18.0
>            Reporter: Colin Evans
>         Attachments: merge-progress.patch, Picture 1.png
>
>
> Enabling map output compression and setting the compression type to BLOCK causes the
progress counters during the reduce to go crazy and report progress counts over 100%.

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