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https://issues.apache.org/jira/browse/SPARK-14283?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15244571#comment-15244571
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Apache Spark commented on SPARK-14283:
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User 'zhengruifeng' has created a pull request for this issue:
https://github.com/apache/spark/pull/12453
> Avoid sort in randomSplit when possible
> ---------------------------------------
>
> Key: SPARK-14283
> URL: https://issues.apache.org/jira/browse/SPARK-14283
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Joseph K. Bradley
>
> Dataset.randomSplit sorts each partition in order to guarantee an ordering
> and make randomSplit deterministic given the seed. Since randomSplit is used
> a fair amount in ML, it would be great to avoid the sort when possible.
> Are there cases when it could be avoided?
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