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https://issues.apache.org/jira/browse/HIVE-287?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12886794#action_12886794
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Zheng Shao commented on HIVE-287:
---------------------------------
The plan looks good to me.
Just one comment: I think we should change the comment/class name for
GenericUDAFResolver2. Let's explicitly say GenericUDAFResolver2 is for UDAFs
that want to have control over whether DISTINCT or * should be treated
differently. For normal UDAFs, they should still inherite from
GenericUDAFResolver.
Does that sound OK?
> count distinct on multiple columns does not work
> ------------------------------------------------
>
> Key: HIVE-287
> URL: https://issues.apache.org/jira/browse/HIVE-287
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Reporter: Namit Jain
> Assignee: Arvind Prabhakar
> Attachments: HIVE-287-1.patch, HIVE-287-2.patch, HIVE-287-3.patch,
> HIVE-287-4.patch, HIVE-287-5-branch-0.6.patch, HIVE-287-5-trunk.patch
>
>
> The following query does not work:
> select count(distinct col1, col2) from Tbl
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