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Posted to issues-all@impala.apache.org by "LiPenglin (Jira)" <ji...@apache.org> on 2022/06/10 16:35:00 UTC

[jira] [Comment Edited] (IMPALA-11279) Optimize count(*) queries for Iceberg tables

    [ https://issues.apache.org/jira/browse/IMPALA-11279?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17538899#comment-17538899 ] 

LiPenglin edited comment on IMPALA-11279 at 6/10/22 4:34 PM:
-------------------------------------------------------------

Hi [~boroknagyz] 

I'd like to try this task if I can.

UPDATE: Consider using generic implementations, still working on it.


was (Author: lipenglin):
Hi [~boroknagyz] 

I'd like to try this task if I can.

> Optimize count(*) queries for Iceberg tables
> --------------------------------------------
>
>                 Key: IMPALA-11279
>                 URL: https://issues.apache.org/jira/browse/IMPALA-11279
>             Project: IMPALA
>          Issue Type: Improvement
>          Components: Frontend
>            Reporter: Zoltán Borók-Nagy
>            Assignee: LiPenglin
>            Priority: Major
>              Labels: impala-iceberg
>
> Plain SELECT count(*) FROM tbl; queries could be made superfast for Iceberg tables as they store the precise number of rows in table property 'numRows'.
> So we could just answer such queries from table metadata.



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