GitHub user srowen opened a pull request:
https://github.com/apache/spark/pull/21947
[MINOR][DOCS] Add note about Spark network security
## What changes were proposed in this pull request?
In response to a recent question, this reiterates that network access to a
Spark cluster should be disabled by default, and that access to its hosts and
services from outside a private network should be added back explicitly.
Also, some minor touch-ups while I was at it.
## How was this patch tested?
N/A
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/srowen/spark SecurityNote
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/21947.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 #21947
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commit b5b14d0a5bb386a5af7597561e36d7396feec058
Author: Sean Owen <srowen@...>
Date: 2018-08-01T18:16:42Z
Add note about Spark network security; small doc touch-ups
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