GitHub user mpjlu opened a pull request:
https://github.com/apache/spark/pull/18832
[SPARK-21623][ML]fix RF doc
## What changes were proposed in this pull request?
comments of parentStats in RF are wrong.
parentStats is not only used for the first iteration, it is used w
Github user asfgit closed the pull request at:
https://github.com/apache/spark/pull/18832
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