[jira] [Updated] (IMPALA-5789) Prune all partitions if an always-false runtime filter is received

["Csaba Ringhofer (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IMPALA-5789?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Csaba Ringhofer updated IMPALA-5789:
------------------------------------
    Labels: performance ramp-up  (was: perfomance ramp-up)

> Prune all partitions if an always-false runtime filter is received
> ------------------------------------------------------------------
>
>                 Key: IMPALA-5789
>                 URL: https://issues.apache.org/jira/browse/IMPALA-5789
>             Project: IMPALA
>          Issue Type: Improvement
>          Components: Backend
>            Reporter: Tim Armstrong
>            Assignee: Tianyi Wang
>            Priority: Major
>              Labels: performance, ramp-up
>             Fix For: Impala 2.11.0
>
>         Attachments: report.txt
>
>
> The scenario is as follows:
> * A query joins a large partitioned table with another table on a non-partition column.
> * All of the rows on the build side are filtered out, so the join has an empty build.
> Currently what happens is that all partitions of the large table are scanned and the runtime filter filters all the rows out after materialization.
> What would ideally happen is that the scan would notice that the runtime filter always returns false and prune all of the partitions.



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