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https://issues.apache.org/jira/browse/SPARK-10100?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14704742#comment-14704742
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Herman van Hovell commented on SPARK-10100:
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Lets leave it for 1.6.
> AggregateFunction2's Max is slower than AggregateExpression1's MaxFunction
> --------------------------------------------------------------------------
>
> Key: SPARK-10100
> URL: https://issues.apache.org/jira/browse/SPARK-10100
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 1.5.0
> Reporter: Yin Huai
> Assignee: Herman van Hovell
> Attachments: SPARK-10100.perf.test.scala
>
>
> Looks like Max (probably Min) implemented based on AggregateFunction2 is
> slower than the old MaxFunction.
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