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Posted to issues-all@impala.apache.org by "Michael Ho (JIRA)" <ji...@apache.org> on 2018/10/25 22:32:00 UTC

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

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

Michael Ho reassigned IMPALA-6501:
----------------------------------

    Assignee: Michal Ostrowski

> 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: Michal Ostrowski
>            Priority: Major
>              Labels: kudu
>
> 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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