GitHub user viirya opened a pull request:

    [SPARK-17556] Executor side broadcast for broadcast joins

    ## What changes were proposed in this pull request?
    The mechanism of broadcast in Spark is to collect the result of an RDD and 
then broadcast it. This introduces some extra latency. We can broadcast 
directly from executors. This patch implements broadcast from executors, and 
applies it on broadcast join of Spark SQL.
    ## How was this patch tested?
    Jenkins tests.

You can merge this pull request into a Git repository by running:

    $ git pull broadcast-on-executors

Alternatively you can review and apply these changes as the patch at:

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #15178


If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at or file a JIRA ticket
with INFRA.

To unsubscribe, e-mail:
For additional commands, e-mail:

Reply via email to