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From "zhengruifeng (Jira)" <>
Subject [jira] [Created] (SPARK-30380) Refactor RandomForest.findSplits
Date Sun, 29 Dec 2019 08:27:00 GMT
zhengruifeng created SPARK-30380:

             Summary: Refactor RandomForest.findSplits
                 Key: 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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