Github user adeneche commented on the pull request:
https://github.com/apache/drill/pull/221#issuecomment-151603223
I'm not talking about logging. Most Drill unit tests rely on
PrintResultsListener that will print the query's output to the standard output
or a SilentListener that won't print the results but still prints the
exception's message to the standard output.
Even if you catch the exception in the unit test, the exception message is
still printed to the standard output.
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