GitHub user mgaido91 opened a pull request:
https://github.com/apache/spark/pull/21268
[SPARK-24209][SHS] Automatic retrieve proxyBase from Knox headers
## What changes were proposed in this pull request?
The PR retrieves the proxyBase automatically from the header
`X-Forwareded-Context` (if available). This is the header used by Knox to
inform the proxied service about the base path.
This provides 0-configuration support for Knox gateway (instead of having
to properly set `spark.ui.proxyBase`) and it allows to access directly SHS when
it is proxied by Knox. In the previous scenario, indeed, after setting
`spark.ui.proxyBase`, direct access to SHS was not working fine (due to bad
link generated).
## How was this patch tested?
added UT + manual tests
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/mgaido91/spark SPARK-24209
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/21268.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 #21268
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commit 0af9c2ab7ce1cb377574932d197f681809374c85
Author: Marco Gaido <marcogaido91@...>
Date: 2018-04-02T09:02:47Z
[SPARK-24209][SHS] Automatic retrieve proxyBase from Knox headers
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