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https://issues.apache.org/jira/browse/SPARK-9349?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Reynold Xin resolved SPARK-9349.
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Resolution: Fixed
Fix Version/s: 1.5.0
> UDAF cleanup for 1.5
> --------------------
>
> Key: SPARK-9349
> URL: https://issues.apache.org/jira/browse/SPARK-9349
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Reporter: Reynold Xin
> Assignee: Yin Huai
> Priority: Blocker
> Fix For: 1.5.0
>
>
> 1. Remove the public o.a.s.sql.expressions.aggregate package
> 2. Move all private classes into execution or catalyst. Don't expose them.
> 3. Define an interface for AggregationBuffer, and only expose the interface
> to users. Internally we can do whatever we want, but don't expose the
> specific implementations directly.
> 4. Label it as experimental.
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