Github user gaborgsomogyi commented on the issue: https://github.com/apache/spark/pull/20745 <img width="1669" alt="screen shot 2018-03-20 at 22 46 50" src="https://user-images.githubusercontent.com/18561820/37696015-b1250bae-2c90-11e8-8ad1-515661487b94.png">
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