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https://issues.apache.org/jira/browse/IMPALA-4986?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alexander Behm updated IMPALA-4986:
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Labels: parquet performance ramp-up (was: parquet performance)
> Use Parquet statistics when evaluating min/max/count aggregates
> ---------------------------------------------------------------
>
> Key: IMPALA-4986
> URL: https://issues.apache.org/jira/browse/IMPALA-4986
> Project: IMPALA
> Issue Type: Improvement
> Components: Frontend
> Affects Versions: Impala 2.9.0
> Reporter: Lars Volker
> Labels: parquet, performance, ramp-up
>
> There are various ways in which Parquet statistics such as num_rows and also
> parquet::Statistics can be used to speed up aggregation queries with
> min/max/count. Some of the improvements can be done at execution-time only,
> others also need query-plan modifications. The subtasks illustrate the
> various optimization opportunities/dimensions, and can be tackled separately.
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