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Posted to issues-all@impala.apache.org by "ASF subversion and git services (Jira)" <ji...@apache.org> on 2021/04/02 07:56:00 UTC
[jira] [Commented] (IMPALA-10538) Document the newly added scale
argument of ndv function
[ https://issues.apache.org/jira/browse/IMPALA-10538?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17313686#comment-17313686 ]
ASF subversion and git services commented on IMPALA-10538:
----------------------------------------------------------
Commit 87555314dc62f8d66e71a0ea8f6b92009a77e6ba in impala's branch refs/heads/master from Shajini Thayasingh
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=8755531 ]
IMPALA-10538: [DOCS] Document the newly added NDV parameter
Added how this argument maps to a precision used by the HLL algorithm.
Incorporated changes from the feedback.
Change-Id: Iec8007b79afac59cdfb3984bb111806213c21c77
Reviewed-on: http://gerrit.cloudera.org:8080/17131
Reviewed-by: Impala Public Jenkins <im...@cloudera.com>
Tested-by: Impala Public Jenkins <im...@cloudera.com>
> Document the newly added scale argument of ndv function
> -------------------------------------------------------
>
> Key: IMPALA-10538
> URL: https://issues.apache.org/jira/browse/IMPALA-10538
> Project: IMPALA
> Issue Type: Documentation
> Components: Docs
> Reporter: Quanlong Huang
> Assignee: shajini thayasingh
> Priority: Critical
>
> We add a new argument, scale, to the ndv() function in IMPALA-2658 to control the precision. We need to update the related documents and give more examples in
> [https://github.com/apache/impala/blob/d271baa33da1a02aa6ffc47b0380dc62239107b4/docs/topics/impala_ndv.xml]
> Web link is [https://impala.apache.org/docs/build/html/topics/impala_ndv.html]
> cc [~sql_forever] who is the author of this great feature. He could provide more details.
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