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https://issues.apache.org/jira/browse/SPARK-15365?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Reynold Xin resolved SPARK-15365.
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Resolution: Fixed
Assignee: Parth Brahmbhatt
Fix Version/s: 2.0.0
> Metastore relation should fallback to HDFS size if statistics are not
> available from table meta data.
> -----------------------------------------------------------------------------------------------------
>
> Key: SPARK-15365
> URL: https://issues.apache.org/jira/browse/SPARK-15365
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Parth Brahmbhatt
> Assignee: Parth Brahmbhatt
> Fix For: 2.0.0
>
>
> Currently if a table is used in join operation we rely on Metastore returned
> size to calculate if we can convert the operation to Broadcast join. This
> optimization only kicks in for table's that have the statistics available in
> metastore. Hive generally rolls over to HDFS if the statistics are not
> available directly from metastore and this seems like a reasonable choice to
> adopt given the optimization benefit of using broadcast joins.
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