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Posted to issues@spark.apache.org by "zhengruifeng (Jira)" <ji...@apache.org> on 2019/12/29 08:27:00 UTC

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

zhengruifeng created SPARK-30380:
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             Summary: 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


Current impl of {{RandomForest.findSplits}} uses {{groupByKey}} to collect non-zero values for each feature, so it is quite dangerous.

 

 



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