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From "Andrew McNabb (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-960) Incorrect number of map tasks when there are multiple input files
Date Tue, 30 Jan 2007 18:07:33 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-960?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Andrew McNabb updated HADOOP-960:
---------------------------------

    Issue Type: Wish  (was: Bug)

> Incorrect number of map tasks when there are multiple input files
> -----------------------------------------------------------------
>
>                 Key: HADOOP-960
>                 URL: https://issues.apache.org/jira/browse/HADOOP-960
>             Project: Hadoop
>          Issue Type: Wish
>    Affects Versions: 0.10.1
>            Reporter: Andrew McNabb
>
> This problem happens with hadoop-streaming and possibly elsewhere.  If there are 5 input
files, it will create 130 map tasks, even if mapred.map.tasks=128.  The number of map tasks
is incorrectly set to a multiple of the number of files.  (I wrote a much more complete bug
report, but Jira lost it when it had an error, so I'm not in the mood to write it all again)

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