Github user bzz commented on the pull request: https://github.com/apache/incubator-zeppelin/pull/873#issuecomment-217056217 Hi @onkarshedge thank you for submitting a fix! In case of fixing a bug in any code, first thing to do is to try adding some kind of (unit-)test to the existing project test suite in order to reproduce the bug. And then implement the fix and make sure the tests pass. This way we are building a "safe-net", so other people can be sure that this particular bug does not happen again, later on. Good place to add a test that reproduces this bug would be in [ZeppelinConfigurationTest.java](https://github.com/apache/incubator-zeppelin/blob/master/zeppelin-zengine/src/test/java/org/apache/zeppelin/conf/ZeppelinConfigurationTest.java)
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