Fabiano Francesconi created ZEPPELIN-3998:

             Summary: Interpreter hangs in "downloading dependecies" when 
Zeppelin is behind proxy
                 Key: ZEPPELIN-3998
                 URL: https://issues.apache.org/jira/browse/ZEPPELIN-3998
             Project: Zeppelin
          Issue Type: Bug
    Affects Versions: 0.8.1, 0.8.0
            Reporter: Fabiano Francesconi

I am running Zeppelin behind a proxy (meaning that there is no Internet 
connectivity in the data center). However, locally I have a repository 
deployment that could serve artifacts to the various interpreters.

I have added my repository to the repositories section and everything works 
flawlessly in other environments where internet access is granted. In this 
specific environment, each interpreter has a spinning circle "dependencies are 
downloaded" which prevents users from using it. As a note, after few hours 
typically everything goes back to green, as I assume the connection times out 
and the work can proceed.

By looking to the connections, I see a connection open towards 
`` (I assume is repo.maven) with a fixed SYN_SENT status. This 
tells me that the problem is not about reaching my repositories but rather to 
access the central one, which I cannot delete nor disable.

I tried to do everything I could:
* Exported http_proxy and https_proxy env variables
* Passed "http/s.proxyHost" system properties to the JVM

Nothing seems to work. Are there any known workarounds to the problem?

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