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Posted to issues@spark.apache.org by "Liang-Chi Hsieh (JIRA)" <ji...@apache.org> on 2017/03/23 04:37:41 UTC
[jira] [Commented] (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=15937707#comment-15937707 ]
Liang-Chi Hsieh commented on SPARK-17556:
-----------------------------------------
We may need to change the Target Version/s for this.
> 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, executor-side-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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