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https://issues.apache.org/jira/browse/MAPREDUCE-6793?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15610903#comment-15610903
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Rohith Sharma K S commented on MAPREDUCE-6793:
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ahh.. thanks for pointing out.. lets change it to 10..
> io.sort.factor code default and mapred-default.xml values inconsistent
> ----------------------------------------------------------------------
>
> Key: MAPREDUCE-6793
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6793
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: task
> Affects Versions: 2.6.5, 3.0.0-alpha1
> Reporter: Gera Shegalov
> Assignee: Prabhu Joseph
> Priority: Trivial
> Labels: noob
> Attachments: 0001-MAPREDUCE-6793.patch
>
>
> The actual default value in mapred-default.xml:
> {code}
> <property>
> <name>mapreduce.task.io.sort.factor</name>
> <value>10</value>
> <description>The number of streams to merge at once while sorting
> files. This determines the number of open file handles.</description>
> </property>
> {code}
> However, MapTask and MergeManagerImpl, are coded with:
> {code}
> int mergeFactor = job.getInt(JobContext.IO_SORT_FACTOR, 100);
> {code}
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