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https://issues.apache.org/jira/browse/SPARK-17050?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15452401#comment-15452401
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Weichen Xu commented on SPARK-17050:
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because KMeans algo is being optimized by another task I close this PR for now
and when that one merged I'll check for whether this need to be optimized.
> Improve initKMeansParallel with treeAggregate
> ---------------------------------------------
>
> Key: SPARK-17050
> URL: https://issues.apache.org/jira/browse/SPARK-17050
> Project: Spark
> Issue Type: Improvement
> Reporter: Weichen Xu
> Original Estimate: 24h
> Remaining Estimate: 24h
>
> The `initKMeansParallel` use `rdd.aggregate`, it is better to use
> `treeAggregate` to get better performance.
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