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From "Liang-Chi Hsieh (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-17556) Executor side broadcast for broadcast joins
Date Fri, 23 Sep 2016 14:21:20 GMT

    [ https://issues.apache.org/jira/browse/SPARK-17556?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15516577#comment-15516577
] 

Liang-Chi Hsieh commented on SPARK-17556:
-----------------------------------------

In other words, from the jira description we say "the driver must collect the result of an
RDD and then broadcast it." You solution is just "the executor must collect the result of
an RDD and then broadcast it."

> 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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