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From "Chris Douglas (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-5652) Reduce does not respect in-memory segment memory limit when number of on disk segments == io.sort.factor
Date Fri, 10 Apr 2009 03:51:13 GMT
Reduce does not respect in-memory segment memory limit when number of on disk segments == io.sort.factor
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                 Key: HADOOP-5652
                 URL: https://issues.apache.org/jira/browse/HADOOP-5652
             Project: Hadoop Core
          Issue Type: Bug
          Components: mapred
    Affects Versions: 0.20.0
            Reporter: Chris Douglas
            Priority: Minor


If the number of on-disk segments is exactly {{io.sort.factor}}, then map output segments
may be left in memory for the reduce contrary to the specification in {{mapred.job.reduce.input.buffer.percent}}.

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