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Posted to mapreduce-issues@hadoop.apache.org by "Akira AJISAKA (JIRA)" <ji...@apache.org> on 2014/09/24 16:40:33 UTC
[jira] [Updated] (MAPREDUCE-6105) Inconsistent configuration in
property mapreduce.reduce.shuffle.merge.percent
[ https://issues.apache.org/jira/browse/MAPREDUCE-6105?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Akira AJISAKA updated MAPREDUCE-6105:
-------------------------------------
Labels: newbie (was: )
> Inconsistent configuration in property mapreduce.reduce.shuffle.merge.percent
> -----------------------------------------------------------------------------
>
> Key: MAPREDUCE-6105
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6105
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Affects Versions: 2.4.0, 2.4.1
> Reporter: Dongwook Kwon
> Priority: Trivial
> Labels: newbie
>
> Similar to MAPREDUCE-5906, In MergeManagerImpl.java, the default value of MRJobConfig.SHUFFLE_MERGE_PERCENT(mapreduce.reduce.shuffle.merge.percent) should be 0.66
> According to official doc.
> https://hadoop.apache.org/docs/current/hadoop-mapreduce-client/hadoop-mapreduce-client-core/mapred-default.xml
> {code}
> this.mergeThreshold = (long)(this.memoryLimit *
> jobConf.getFloat(MRJobConfig.SHUFFLE_MERGE_PERCENT,
> 0.90f));
> {code}
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