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https://issues.apache.org/jira/browse/SPARK-4233?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-4233:
-----------------------------------
Assignee: (was: Apache Spark)
> Simplify the Aggregation Function implementation
> ------------------------------------------------
>
> Key: SPARK-4233
> URL: https://issues.apache.org/jira/browse/SPARK-4233
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Reporter: Cheng Hao
>
> Currently, the UDAF implementation is quite complicated, and we have to
> provide distinct & non-distinct version.
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