GitHub user rxin opened a pull request:
https://github.com/apache/spark/pull/12315
[SPARK-14547] Avoid DNS resolution for reusing connections
## What changes were proposed in this pull request?
This patch changes the connection creation logic in the network client
module to avoid DNS resolution when reusing connections.
## How was this patch tested?
Testing in production. This is too difficult to test in isolation (for high
fidelity unit tests, we'd need to change the DNS resolution behavior in the
JVM).
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/rxin/spark SPARK-14547
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/12315.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 #12315
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commit 70b5e828d4e2536476bf1df36d019651cdeae50c
Author: Reynold Xin <[email protected]>
Date: 2016-04-12T01:27:48Z
[SPARK-14547] Avoid DNS resolution for reusing connections
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