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https://issues.apache.org/jira/browse/HIVE-25694?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17816863#comment-17816863
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HiuFung Kwok commented on HIVE-25694:
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[~stakiar] I found this equally confusing, as I attempted to bump Hive on
SPARK-44114.
Any documentation on GenericUDAFResolver2 deprecation would be appreciated.
> HIVE-17132 deprecated UDAF resolver without documenting path forward.
> ---------------------------------------------------------------------
>
> Key: HIVE-25694
> URL: https://issues.apache.org/jira/browse/HIVE-25694
> Project: Hive
> Issue Type: Bug
> Affects Versions: 3.0.0
> Reporter: Matt Andruff
> Priority: Major
>
> HIVE-17132弃用了GenericUDAFResolver2或扩展AbstractGenericUDAFResolver，但没有帮助解释应该使用什么来代替它。（它可能意外地弃用了它们，目前尚不清楚UDAF是否应该与UDF混为一谈。
> HIVE-6331是相关的，因为这发生在上次弃用的实现之前。
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