GitHub user maropu opened a pull request:
https://github.com/apache/spark/pull/10346
[SPARK-12392] Optimize a location order of broadcast blocks by considering
preferred local hosts
When multiple workers exist in a host, we can bypass unnecessary remote
access for broadcasts; block managers fetch broadcast blocks from the same host
instead of remote hosts.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/maropu/spark OptimizeBlockLocationOrder
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/10346.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 #10346
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commit c39664085ac8ae89754dda653770314308b1c2fa
Author: Takeshi YAMAMURO <[email protected]>
Date: 2015-12-15T07:15:08Z
Optimize a location order of blocks by considering preferred local host
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