Description
Currently if some partitions of a partitioned table are used in join operation we rely on Metastore returned size of table to calculate if we can convert the operation to Broadcast join.
if Filter can prune some partitions, Hive can prune partition before determining to use broadcast joins according to HDFS size of partitions that are involved in Query.So sparkSQL needs it that can improve join's performance for partitioned table.
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Issue Links
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SPARK-16669 Partition pruning for metastore relation size estimates for better join selection.
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- Closed
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