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Posted to issues@impala.apache.org by "Gabor Kaszab (Jira)" <ji...@apache.org> on 2020/07/28 13:08:00 UTC

[jira] [Closed] (IMPALA-9635) Rewrite count(distinct) to use ds_hll_* functions when in BI mode

     [ https://issues.apache.org/jira/browse/IMPALA-9635?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gabor Kaszab closed IMPALA-9635.
--------------------------------
    Fix Version/s: Not Applicable
       Resolution: Won't Fix

Apparently, there is no need in Impala to do the rewrite.

> Rewrite count(distinct) to use ds_hll_* functions when in BI mode
> -----------------------------------------------------------------
>
>                 Key: IMPALA-9635
>                 URL: https://issues.apache.org/jira/browse/IMPALA-9635
>             Project: IMPALA
>          Issue Type: New Feature
>          Components: Frontend
>            Reporter: Gabor Kaszab
>            Priority: Major
>             Fix For: Not Applicable
>
>
> This effort is dependent on a major FE work that is going on currently. The task here is to verify that:
> 1) There is a switch to turn on BI mode
> 2) In BI mode count(distinct) queries are rewritten to ds_hll_* approx functions



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