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Posted to issues@spark.apache.org by "Parth Brahmbhatt (JIRA)" <ji...@apache.org> on 2016/07/21 19:12:20 UTC

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

Parth Brahmbhatt created SPARK-16669:
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             Summary: 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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