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Posted to issues@impala.apache.org by "bharath v (JIRA)" <ji...@apache.org> on 2018/01/17 20:53:00 UTC

[jira] [Resolved] (IMPALA-6411) Compute stats for a subset of columns

     [ https://issues.apache.org/jira/browse/IMPALA-6411?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

bharath v resolved IMPALA-6411.
-------------------------------
    Resolution: Duplicate

https://issues.apache.org/jira/browse/IMPALA-3562

> Compute stats for a subset of columns
> -------------------------------------
>
>                 Key: IMPALA-6411
>                 URL: https://issues.apache.org/jira/browse/IMPALA-6411
>             Project: IMPALA
>          Issue Type: Improvement
>    Affects Versions: Impala 2.11.0
>            Reporter: Peter Ebert
>            Priority: Major
>
> For tables with a large # of columns (>400), the metadata and processing time for computing stats on all columns becomes prohibitively expensive.  It would increase performance and reduce catalog memory to be able to run stats only on a subset of columns that are frequently accessed.



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