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Posted to issues-all@impala.apache.org by "Steve Carlin (Jira)" <ji...@apache.org> on 2026/04/20 16:05:00 UTC

[jira] [Commented] (IMPALA-14235) Calcite planner: Investigate filter selectivity for join non nulls

    [ https://issues.apache.org/jira/browse/IMPALA-14235?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18074912#comment-18074912 ] 

Steve Carlin commented on IMPALA-14235:
---------------------------------------

More work for selectivity needs to be done for Calcite

> Calcite planner: Investigate filter selectivity for join non nulls
> ------------------------------------------------------------------
>
>                 Key: IMPALA-14235
>                 URL: https://issues.apache.org/jira/browse/IMPALA-14235
>             Project: IMPALA
>          Issue Type: Sub-task
>            Reporter: Steve Carlin
>            Priority: Major
>
> There is a TODO: in the FilterSelectivityEstimator.computeIsNotNullSelectivity method.  We should do some investigation to see if we can do better with the filter selectivity estimation here



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