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https://issues.apache.org/jira/browse/SPARK-27996?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17027680#comment-17027680
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Igor Shikin commented on SPARK-27996:
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PR to master: [https://github.com/apache/spark/pull/27311]
Help with regression testing in non-kubernetes environment is much appreciated
> Spark UI redirect will be failed behind the https reverse proxy
> ---------------------------------------------------------------
>
> Key: SPARK-27996
> URL: https://issues.apache.org/jira/browse/SPARK-27996
> Project: Spark
> Issue Type: Bug
> Components: Web UI
> Affects Versions: 2.4.3
> Reporter: Saisai Shao
> Priority: Minor
>
> When Spark live/history UI is proxied behind the reverse proxy, the redirect
> will return wrong scheme, for example:
> If reverse proxy is SSL enabled, so the client to reverse proxy is a HTTPS
> request, whereas if Spark's UI is not SSL enabled, then the request from
> reverse proxy to Spark UI is a HTTP request, Spark itself treats all the
> requests as HTTP requests, so the redirect URL is just started with "http",
> which will be failed to redirect from client.
> Actually for most of the reverse proxy, the proxy will add an additional
> header "X-Forwarded-Proto" to tell the backend server that the client request
> is a https request, so Spark should leverage this header to return the
> correct URL.
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