Github user asfgit closed the pull request at:
https://github.com/apache/zeppelin/pull/1379
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GitHub user passionke opened a pull request:
https://github.com/apache/zeppelin/pull/1379
[ZEPPELIN-1116]send out more exception msg
### What is this PR for?
better jdbc error msg make people know the true error clearly.
### What type of PR is it?
Improvement
