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Posted to issues@impala.apache.org by "LiPenglin (Jira)" <ji...@apache.org> on 2022/05/13 09:54:00 UTC

[jira] [Resolved] (IMPALA-11286) Implement impala write 'values_counts' to Iceberg meta

     [ https://issues.apache.org/jira/browse/IMPALA-11286?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

LiPenglin resolved IMPALA-11286.
--------------------------------
    Resolution: Resolved

> Implement impala write 'values_counts' to Iceberg meta
> ------------------------------------------------------
>
>                 Key: IMPALA-11286
>                 URL: https://issues.apache.org/jira/browse/IMPALA-11286
>             Project: IMPALA
>          Issue Type: Improvement
>            Reporter: LiPenglin
>            Assignee: LiPenglin
>            Priority: Major
>              Labels: impala-iceberg
>
> Impala doesn't write 'value_counts', only 'null_value_counts'.
> [https://github.com/apache/impala/blob/1f20b7aa51b5c93dea03515423def2d800f43554/fe/src/main/java/org/apache/impala/service/IcebergCatalogOpExecutor.java#L316]
> 'values_counts' is very helpful for pushing down NOT_NULL predicate, so we should implement impala write 'values_counts' to Iceberg Meta.



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