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https://issues.apache.org/jira/browse/SPARK-23644?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16401538#comment-16401538
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Saisai Shao commented on SPARK-23644:
-------------------------------------
Fixed in https://github.com/apache/spark/pull/20794.
> SHS with proxy doesn't show applications
> ----------------------------------------
>
> Key: SPARK-23644
> URL: https://issues.apache.org/jira/browse/SPARK-23644
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core, Web UI
> Affects Versions: 2.3.0
> Reporter: Marco Gaido
> Assignee: Marco Gaido
> Priority: Minor
> Fix For: 2.4.0
>
>
> The History server supports being consumed via a proxy using the
> {{spark.ui.proxyBase}} property. Despite it works fine if you access the
> proxy using a link which ends with "/", it doesn't show any application if
> the URL accessed doesn't end with "/", eg. if you access SHS using
> {{https://yourproxy.whatever:1234/path/to/historyserver/}} it works fine, but
> it you access it using
> {{https://yourproxy.whatever:1234/path/to/historyserver}} no application is
> shown.
> The cause of this is that the call to the REST API to get the list of the
> application is a relative path call. So in the second case, instead of
> performing a GET to
> {{https://yourproxy.whatever:1234/path/to/historyserver/api/v1/applications}},
> it performs a call to
> {{https://yourproxy.whatever:1234/path/to/api/v1/applications}}.
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