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Posted to issues@spark.apache.org by "Fei Wang (JIRA)" <ji...@apache.org> on 2016/09/23 13:06:20 UTC
[jira] [Comment Edited] (SPARK-17556) Executor side broadcast for
broadcast joins
[ https://issues.apache.org/jira/browse/SPARK-17556?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15516386#comment-15516386 ]
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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