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Posted to dev@zeppelin.apache.org by "marc hurabielle (JIRA)" <ji...@apache.org> on 2019/03/18 09:23:00 UTC

[jira] [Created] (ZEPPELIN-4078) Ipython improvement

marc hurabielle created ZEPPELIN-4078:
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             Summary: Ipython improvement
                 Key: ZEPPELIN-4078
                 URL: https://issues.apache.org/jira/browse/ZEPPELIN-4078
             Project: Zeppelin
          Issue Type: Bug
          Components: python-interpreter
    Affects Versions: 0.8.1
         Environment: tested in linux / macos. Tested the ipython server directly.
            Reporter: marc hurabielle


Ipython / ipython server has currently mutliple problem. 


 * Concurrent execution and auto complete can make a paragraph hang forever (until restart of the ipython server). Maybe related to [https://github.com/jupyter/jupyter_client/issues/429]
 * Out of memory for ipython will make a paragraph hang instead of throw one error.
 * High cpu usage. The loop that read from the pub/sub should not try to read everytimes the pub sub. Need to be debounce.

Overall most of those bug might be related also to some jupyter_client bug or wrong usage.
However, those are the action item:


 * synchronize auto complete / paragraph execution for now
 * check the kernel status when we are checking for the thread
 * sleep time to time when there is no message in pub/sub
 * Use only one queue instead of 3 ?



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