Github user sbcd90 commented on the pull request:
https://github.com/apache/spark/pull/12458#issuecomment-211207173
Hello @yhuai ,
I tested the scenario you mentioned & it works fine for me without any
errors.
However, as you rightly mentioned, the following statement need not be
removed.
```
import implicits._
```
Hence, I reverted that particular change. Please comment.
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