eaton created SPARK-26599:
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Summary: BroardCast hint can not work with
PruneFileSourcePartitions
Key: SPARK-26599
URL: https://issues.apache.org/jira/browse/SPARK-26599
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 2.4.0
Reporter: eaton
BroardCast hint can not work with `PruneFileSourcePartitions`, for example,
when the filter condition p is a partition field, table b in SQL below cannot
be broadcast.
` sql("select /*+ broadcastjoin(b) */ * from (select a from empty_test where
p=1) a " +
"join (select a,b from par_1 where p=1) b on a.a=b.a").explain`
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