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From "Apache Spark (Jira)" <>
Subject [jira] [Assigned] (SPARK-32985) Decouple bucket filter pruning and bucket table scan
Date Mon, 01 Feb 2021 06:30:01 GMT


Apache Spark reassigned SPARK-32985:

    Assignee:     (was: Apache Spark)

> Decouple bucket filter pruning and bucket table scan
> ----------------------------------------------------
>                 Key: SPARK-32985
>                 URL:
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.1.0
>            Reporter: Cheng Su
>            Priority: Minor
> As a followup from discussion in [] .
Currently in data source v1 file scan `FileSourceScanExec`, bucket filter pruning will only
take effect with bucket table scan - [] .
However this is unnecessary, as bucket filter pruning can also happen if we disable bucketed
table scan. This help query leverage the benefit from bucket filter pruning to save CPU/IO
to not read unnecessary bucket files, and do not bound by bucket table scan when the parallelism
of tasks is a concern.

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