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https://issues.apache.org/jira/browse/SPARK-26242?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16706157#comment-16706157
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Marco Gaido commented on SPARK-26242:
-------------------------------------

Let me close this. Please reopen only if you find issues. In the future, 
please, if you have questions send them to the mailing lists and open a JIRA 
only if you find an incorrect behavior. Thanks.

> Leading slash breaks proxying
> -----------------------------
>
>                 Key: SPARK-26242
>                 URL: https://issues.apache.org/jira/browse/SPARK-26242
>             Project: Spark
>          Issue Type: Bug
>          Components: Web UI
>    Affects Versions: 2.4.0
>            Reporter: Ryan Lovett
>            Priority: Minor
>
> The WebUI prefixes "/" at the beginning of each link path (e.g. /jobs) which 
> breaks navigation when attempting to proxy the app at another URL. In my 
> case, a pyspark user creates a SparkContext within a JupyterHub-hosted 
> notebook and attempts to proxy it with nbserverproxy off of 
> address.of.jupyter.hub/user/proxy/4040/. Since WebUI sets the URLs of its 
> pages to begin with "/", the browser sends the user to 
> address.of.jupyter.hub/jobs, address.of.jupyter.hub/stages, etc.
>  
> Similar: 
> [https://github.com/mesosphere/spark/commit/ada99f1b3801e81db2e367f219377e93f5d32655|https://github.com/apache/spark/pull/11369]



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