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https://issues.apache.org/jira/browse/SPARK-3366?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14153396#comment-14153396
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Apache Spark commented on SPARK-3366:
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User 'chouqin' has created a pull request for this issue:
https://github.com/apache/spark/pull/2595
> Compute best splits distributively in decision tree
> ---------------------------------------------------
>
> Key: SPARK-3366
> URL: https://issues.apache.org/jira/browse/SPARK-3366
> Project: Spark
> Issue Type: Improvement
> Components: MLlib
> Reporter: Xiangrui Meng
> Assignee: Qiping Li
>
> The current implementation computes all best splits locally on the driver,
> which makes the driver a bottleneck for both communication and computation.
> It would be nice if we can compute the best splits distributively.
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