Apache Spark commented on SPARK-17556:

User 'viirya' has created a pull request for this issue:

> 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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