Reynold Xin created SPARK-17556:
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             Summary: Executor side broadcast for broadcast joins
                 Key: SPARK-17556
                 URL: https://issues.apache.org/jira/browse/SPARK-17556
             Project: Spark
          Issue Type: New Feature
          Components: Spark Core, SQL
            Reporter: Reynold Xin


Currently in Spark SQL, in order to perform a broadcast join, the driver must 
collect the result of an RDD and then broadcast it. This introduces some extra 
latency. It might be possible to broadcast directly from executors.




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