Zeppelin hangs in air-gapped environments

[Raffaele S]

Hello,

while starting Zeppelin in an air-gapped environment, it hangs for a few
minutes (up to 10) on:

WARN [2017-03-24 13:57:49,777] ({main} Helium.java[loadConf]:101) -
/zeppelin-server/conf/helium.json does not exists
ERROR [2017-03-24 14:01:27,909] ({main} ZeppelinServer.java[]:131) -
Running 'npm install --registry=http://registry.npmjs.org/' in
/zeppelin-server/local-repo/vis


Please note that I downloaded npm and nodejs files manually.


Is there a known solution to this problem?


Raffaele

Re: How to bind angular object with backend when write Helium Application

[fish fish]

Hi Lee,

Follow your instruction, I can update frontend from beckend and get
AngularObject through 'HeliumAppAngularObjectRegistry'. However, I don't
know how to get 'InterpreterContext' in Helium Application, which is needed
to initialize an 'AngularObjectWatcher' when adding watcher. I checked
ApplicationContext but seems I cannot get InterpreterContext there. Could
you share more lights on that? Thanks!

2017-03-21 11:20 GMT+08:00 fish fish :

> Thank you Lee for such promptly response! Will check the code and get back
> if any further problems. Thank you again!
>
> 2017-03-21 3:23 GMT+08:00 moon soo Lee :
>
>> Hi Hishfish,
>>
>> If you take a look Clock example [1], you'll see how it creates angular
>> objects and update every seconds from backend, so front-end can be updated
>> accordingly.
>>
>> After you add your object into AngularObjectRegistry, you can get
>> AngularObject and add watcher [2]. Then any changes of the angular scope
>> variable from front end will trigger your watcher where you can place your
>> backend logics.
>>
>> Hope this helps,
>>
>> Thanks,
>> moon
>>
>> [1] https://github.com/apache/zeppelin/blob/master/zeppelin-
>> examples/zeppelin-example-clock/src/main/java/org/apache/
>> zeppelin/example/app/clock/Clock.java#L72
>> [2] https://github.com/apache/zeppelin/blob/master/zeppelin-
>> interpreter/src/main/java/org/apache/zeppelin/display/Angula
>> rObject.java#L219
>>
>>
>> On Mon, Mar 20, 2017 at 8:47 AM fish fish  wrote:
>>
>>> Hi Group,
>>>
>>> Recently we are exploring building data analysis application based on
>>> Zeppelin. We checked Helium document and think it could be an appropriate
>>> way to customize both frontend and backend in Zeppelin. However, we did not
>>> find a way to bind angular object with backend data when extends
>>> Application. More detail, we want to catch the frontend angular object
>>> value / change event in the backend and then process in some way to
>>> feedback to frontend. Could someone kindly show us the right way to do
>>> this? We are now using 0.8.0 snapshot code. Thank you very much in advance!
>>>
>>> Best,
>>>
>>> Fishfish
>>>
>>
>