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Date: Mon, 21 Mar 2011 10:03:05 +0000 (UTC)
From: "Michael Noll (JIRA)" <jira@apache.org>
To: mapreduce-issues@hadoop.apache.org
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Subject: [jira] [Updated] (MAPREDUCE-2398) MRBench: setting the baseDir
 parameter has no effect
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     [ https://issues.apache.org/jira/browse/MAPREDUCE-2398?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael Noll updated MAPREDUCE-2398:
------------------------------------

    Fix Version/s: 0.22.0
     Release Note: Fixes MRBench to properly handle the -baseDir parameter.
           Status: Patch Available  (was: Open)

> MRBench: setting the baseDir parameter has no effect
> ----------------------------------------------------
>
>                 Key: MAPREDUCE-2398
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2398
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: benchmarks
>    Affects Versions: 0.20.2, 0.22.0
>            Reporter: Michael Noll
>            Priority: Minor
>             Fix For: 0.22.0
>
>         Attachments: MAPREDUCE-2398-trunk.patch, MAPREDUCE-2398_0.20.2.patch
>
>
> The optional {{-baseDir}} parameter lets user specify the base DFS path for output/input of MRBench.
> However, the two private variables {{INPUT_DIR}} and {{OUTPUT_DIR}} (MRBench.java) are not updated in the case that the default value of  {{-baseDir}} is actually overwritten by the user. Hence any input and output is always written to the default locations ({{/benchmarks/MRBench/...}}), even though the user-supplied location for {{-baseDir}} is created (and eventually deleted again) on HDFS.
> The bug affects at least Hadoop 0.20.2 and the current trunk (r1082703) as of March 21, 2011.

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