Github user tillrohrmann commented on the issue:
https://github.com/apache/flink/pull/5736
Checkstyle violation:
```
14:50:10.329 [ERROR]
src/test/java/org/apache/flink/test/checkpointing/ResumeCheckpointManuallyITCase.java:[297]
(regexp) RegexpSingleline: Trailing whitespace
14:50:10.329 [ERROR]
src/test/java/org/apache/flink/test/checkpointing/ResumeCheckpointManuallyITCase.java:[332]
(regexp) RegexpSingleline: Trailing whitespace
```---
