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https://issues.apache.org/jira/browse/SPARK-23661?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16396538#comment-16396538
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Apache Spark commented on SPARK-23661:
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User 'viirya' has created a pull request for this issue:
https://github.com/apache/spark/pull/20806
> Implement treeAggregate on Dataset API
> --------------------------------------
>
> Key: SPARK-23661
> URL: https://issues.apache.org/jira/browse/SPARK-23661
> Project: Spark
> Issue Type: New Feature
> Components: SQL
> Affects Versions: 2.4.0
> Reporter: Liang-Chi Hsieh
> Priority: Major
>
> Many algorithms in MLlib are still not migrated their internal computing
> workload from {{RDD}} to {{DataFrame}}. {{treeAggregate}} is one of obstacles
> we need to address in order to see complete migration.
> This ticket is opened to provide {{treeAggregate}} on Dataset API. For now
> this should be a private API used by ML component.
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