Github user gaborgsomogyi commented on the issue: https://github.com/apache/spark/pull/20745 <img width="784" alt="screen shot 2018-03-20 at 22 37 37" src="https://user-images.githubusercontent.com/18561820/37695954-5aacaa2a-2c90-11e8-9f73-f57d0e1b27f6.png">
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