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Posted to issues-all@impala.apache.org by "Lars Volker (JIRA)" <ji...@apache.org> on 2019/04/30 19:57:00 UTC
[jira] [Reopened] (IMPALA-5185) Parquet scanner should skip pages
based on parquet page statistics
[ https://issues.apache.org/jira/browse/IMPALA-5185?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Lars Volker reopened IMPALA-5185:
---------------------------------
> Parquet scanner should skip pages based on parquet page statistics
> ------------------------------------------------------------------
>
> Key: IMPALA-5185
> URL: https://issues.apache.org/jira/browse/IMPALA-5185
> Project: IMPALA
> Issue Type: Improvement
> Components: Backend
> Affects Versions: Impala 2.9.0
> Reporter: Lars Volker
> Assignee: Lars Volker
> Priority: Major
> Labels: parquet, performance
>
> IMPALA-2328 added support to skip row groups based on row group statistics. We also need to support skipping pages based on page statistics. As a prerequisite the parquet scanners need to be adapted to support synchronous row skipping.
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