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Posted to issues@impala.apache.org by "Norbert Luksa (Jira)" <ji...@apache.org> on 2019/10/24 11:40:00 UTC

[jira] [Resolved] (IMPALA-6501) Optimize count(*) for Kudu scans

     [ https://issues.apache.org/jira/browse/IMPALA-6501?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Norbert Luksa resolved IMPALA-6501.
-----------------------------------
    Fix Version/s: Impala 3.4.0
       Resolution: Fixed

> Optimize count(*) for Kudu scans
> --------------------------------
>
>                 Key: IMPALA-6501
>                 URL: https://issues.apache.org/jira/browse/IMPALA-6501
>             Project: IMPALA
>          Issue Type: Improvement
>          Components: Backend
>    Affects Versions: Impala 2.11.0
>            Reporter: Tim Armstrong
>            Assignee: Norbert Luksa
>            Priority: Major
>              Labels: kudu, ramp-up
>             Fix For: Impala 3.4.0
>
>
> IMPALA-5036 added an optimisation for count(\*) in Parquet scans that avoids materialising dummy rows. We should do something similar for Kudu.



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