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Posted to issues@spark.apache.org by "zhengruifeng (Jira)" <ji...@apache.org> on 2019/12/31 06:16:00 UTC

[jira] [Assigned] (SPARK-30380) Refactor RandomForest.findSplits

     [ https://issues.apache.org/jira/browse/SPARK-30380?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

zhengruifeng reassigned SPARK-30380:
------------------------------------

    Assignee: zhengruifeng

> Refactor RandomForest.findSplits
> --------------------------------
>
>                 Key: SPARK-30380
>                 URL: https://issues.apache.org/jira/browse/SPARK-30380
>             Project: Spark
>          Issue Type: Improvement
>          Components: ML
>    Affects Versions: 3.0.0
>            Reporter: zhengruifeng
>            Assignee: zhengruifeng
>            Priority: Minor
>
> Current impl of {{RandomForest.findSplits}} uses {{groupByKey}} to collect non-zero values for each feature, so it is quite dangerous.
>  
>  



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