Github user jerryshao commented on the issue:
https://github.com/apache/spark/pull/17582
@tgravescs , with the changes of history UI, REST API and web UI are now
mixed. The base URL to list all the apps is through REST API.
The key problem here is that in History Server we could have configured two
ACLs (spark.acls.enable
[here](https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/deploy/history/HistoryServer.scala#L299)
and spark.history.ui.acls.enable
[here](https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/deploy/history/FsHistoryProvider.scala#L248)),
this two ACLs checks different URLs, for example:
```
/api/v1/applications
/api/v1/applications/<app-id>
/api/v1/applications/<app-id>/logs
```
are controlled by `spark.acls.enable`. And web UI will use this API to list
and show apps on the UI. If this is enabled, then only SHS owner, admin/view
user groups could see the apps list on the SHS's base web UI.
And all the other URLs (web UI and REST API) for application details are
controlled by `spark.history.ui.acls.enable`.
If we configured differently for this two ACLs, then we will get some
unexpected behaviors.
So what I here fixed is to unify the ACL and offer the right behavior.
>No, there shouldn't be sensitive information there and many times a user
is looking for a job run by say a headless user or other user. I guess you
could filter only the jobs that user has acls to but that makes it more
complicated. Do you have a concrete reason it should be protected? Note that
this follow how other Hadoop UI's work.
We worked with customers and they wish to filter and list apps based on the
login users. But I don't have strong opinion it. I could change to what you
suggested.
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