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Fei Wang edited comment on SPARK-17556 at 9/23/16 1:05 PM:
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[~rxin] attached a design doc for the executor based broadcast. Will soon file a PR for this.
[~viirya] We have a executor based broadcast implementation in our inner produce system which
is based on the design doc i attached. Now we are contributing it to opensource, Can you help
to review this, thanks.
was (Author: scwf):
[~rxin] attached a design doc for the executor based broadcast. Will soon file a PR for this.
[~viirya] We have a executor based broadcast implementation in our inner produce system which
is based on the design doc i attached. Can you help to review this, thanks.
> 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
> Attachments: executor broadcast.pdf
>
>
> 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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