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Posted to dev@phoenix.apache.org by "James Taylor (JIRA)" <ji...@apache.org> on 2017/03/08 05:11:38 UTC

[jira] [Commented] (PHOENIX-3390) Custom UDAF for HyperLogLogPlus

    [ https://issues.apache.org/jira/browse/PHOENIX-3390?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15900714#comment-15900714 ] 

James Taylor commented on PHOENIX-3390:
---------------------------------------

Still planning on contributing something, [~talktoswapna@gmail.com]?

> Custom UDAF for HyperLogLogPlus
> -------------------------------
>
>                 Key: PHOENIX-3390
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-3390
>             Project: Phoenix
>          Issue Type: New Feature
>            Reporter: Swapna Kasula
>            Priority: Minor
>
> With ref # PHOENIX-2069
> Custome UDAF to aggregate/union of Hyperloglog's of a column and returns a Hyperloglog.
> select hllUnion(col1) from table;  //returns a Hyperloglog, which is the union of all hyperloglog's from all rows for column 'col1'



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