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https://issues.apache.org/jira/browse/SPARK-4845?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved SPARK-4845.
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Resolution: Won't Fix
Fix Version/s: (was: 1.3.0)
Target Version/s: (was: 1.3.0)
See PR discussion.
> Adding a parallelismRatio to control the partitions num of shuffledRDD
> ----------------------------------------------------------------------
>
> Key: SPARK-4845
> URL: https://issues.apache.org/jira/browse/SPARK-4845
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Affects Versions: 1.1.0
> Reporter: Fei Wang
>
> Adding parallelismRatio to control the partitions num of shuffledRDD, the
> rule is:
> Math.max(1, parallelismRatio * number of partitions of the largest upstream
> RDD)
> The ratio is 1.0 by default to make it compatible with the old version.
> When we have a good experience on it, we can change this.
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