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Posted to issues-all@impala.apache.org by "Gabor Kaszab (Jira)" <ji...@apache.org> on 2021/02/09 13:59:00 UTC

[jira] [Commented] (IMPALA-10464) Performance comparison between ndv() ds_hll_* and ds_theat_* functions

    [ https://issues.apache.org/jira/browse/IMPALA-10464?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17281796#comment-17281796 ] 

Gabor Kaszab commented on IMPALA-10464:
---------------------------------------

I'd also include the recently introduced CPC sketch as well to these measurements as it serves the same purpose as HLL and Theta

> Performance comparison between ndv() ds_hll_* and ds_theat_* functions
> ----------------------------------------------------------------------
>
>                 Key: IMPALA-10464
>                 URL: https://issues.apache.org/jira/browse/IMPALA-10464
>             Project: IMPALA
>          Issue Type: New Feature
>          Components: Perf Investigation
>            Reporter: Fucun Chu
>            Assignee: Fucun Chu
>            Priority: Major
>             Fix For: Not Applicable
>
>
> Perf comparison doc:
> [https://docs.google.com/spreadsheets/d/1ew7XCENs7wLxIVlr70bymUBP59YAGUCnNXTR0i_uzv0/edit#gid=0]
> General observations  included in the doc.



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