Github user khalidhuseynov commented on the issue:

    https://github.com/apache/zeppelin/pull/1408
  
    @kavinkumarks thanks for contribution. the idea of propagating error to the 
user is a good one and definitely improves users experience. However, in your 
implementation you basically propagate all kinds of errors (on on top level 
catch `Exception`) with the same message to the user and he still not sure what 
the problem is. I think we need more fine grained approach here and let every 
method/feature implementor to be able to send `ERROR_INFO` message on his own 
catch statement for say `PROPAGATE_USER_EXCEPTION` with the message specific to 
error and throw other kinds of errors up to the logs. does that makes sense?


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