[jira] [Created] (SPARK-19431) Use HTML Relative Links Access UI Behind Gateways

["Zane (JIRA)" <ji...@apache.org>]

Zane created SPARK-19431:
----------------------------

             Summary: Use HTML Relative Links Access UI Behind Gateways
                 Key: SPARK-19431
                 URL: https://issues.apache.org/jira/browse/SPARK-19431
             Project: Spark
          Issue Type: Improvement
          Components: Web UI
    Affects Versions: 2.1.0
            Reporter: Zane
            Priority: Minor


The Spark UI should be accessible behind a gateway that redirects based on the URL path (i.e. http://domain.com/spark --> http://private.domain.com:8080). 

Currently the Spark UI uses root links in the html page. It would be nice if it used relative links instead. By eliminating the first forward-slash "/" the Spark UI can be accessible behind an HTTP gateway. 

For example, in core/src/main/scala/org/apache/spark/ui/UIUtils.scala
{quote}
...
<link rel="stylesheet" href={prependBaseUri("/static/bootstrap.min.css")} type="text/css"/>
...
{quote}
could be changed to
{quote}
...
<link rel="stylesheet" href={prependBaseUri("static/bootstrap.min.css")} type="text/css"/>
...
{quote}

This would allow the Spark UI to be accessible behind a gateway that redirects based on the URL path.



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