GitHub user viirya opened a pull request:
https://github.com/apache/spark/pull/15178
[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 https://github.com/viirya/spark-1 broadcast-on-executors
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/15178.patch
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 infrastruct...@apache.org or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org
For additional commands, e-mail: reviews-h...@spark.apache.org
