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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2016/07/21 19:17:21 UTC

[jira] [Assigned] (SPARK-16669) Partition pruning for metastore relation size estimates for better join selection.

     [ https://issues.apache.org/jira/browse/SPARK-16669?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-16669:
------------------------------------

    Assignee:     (was: Apache Spark)

> Partition pruning for metastore relation size estimates for better join selection.
> ----------------------------------------------------------------------------------
>
>                 Key: SPARK-16669
>                 URL: https://issues.apache.org/jira/browse/SPARK-16669
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 2.0.0
>            Reporter: Parth Brahmbhatt
>
>  Currently the metastore statistics returns the size of entire table which results in Join selection strategy to not use broadcast joins even when only a single partition from a large table is selected. We should optimize the statistic calculation at table level to apply partition pruning and only get the size of Partition that are valid for the query.



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