Github user tillrohrmann commented on the issue:
https://github.com/apache/flink/pull/6178
Checkstyle errors:
```
18:31:10.780 [INFO] There are 2 errors reported by Checkstyle 8.4 with
/tools/maven/checkstyle.xml ruleset.
18:31:10.788 [ERROR]
src/main/java/org/apache/flink/runtime/rest/handler/FileUploads.java:[56]
(regexp) RegexpSingleline: Trailing whitespace
18:31:10.804 [ERROR]
src/test/java/org/apache/flink/runtime/rest/FileUploadHandlerTest.java:[99]
(regexp) RegexpSingleline: Trailing whitespace
```
---
