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Liang-Chi Hsieh commented on SPARK-21591:
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[~yanboliang] Thanks for linking to the related JIRA.
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Yanbo Liang commented on SPARK-21591:
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[~viirya] I agree there are lots of performance bottlenecks,
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Liang-Chi Hsieh commented on SPARK-21591:
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IIUC, basically the aggregation in SparkSQL doesn't
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Yanbo Liang commented on SPARK-21591:
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[~viirya] Yep, this is the way we are using, but we want to
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Liang-Chi Hsieh commented on SPARK-21591:
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The most straightforward way is similar to
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Kazuaki Ishizaki commented on SPARK-21591:
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I like this idea
> Implement treeAggregate on
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Yanbo Liang commented on SPARK-21591:
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cc [~cloud_fan]
> Implement treeAggregate on Dataset API
>
