Github user wangyum commented on the issue: https://github.com/apache/spark/pull/22570 What do we do next? 1. Change `level` to `warning`and commit all changes. In this case `dev/scalastyle` can pass, but IDEA will have a warning: ![image](https://user-images.githubusercontent.com/5399861/46182341-d3291700-c2fd-11e8-8a02-1f553066b611.png) 2. Remove `EmptyInterpolatedStringChecker` and commit all changes. 3. Just close this PR.
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