Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/2637#discussion_r84584475
--- Diff:
flink-java/src/test/java/org/apache/flink/api/java/operator/JoinOperatorTest.java
---
@@ -1211,7 +1210,6 @@ public String toString() {
public String myString;
public Object nothing;
public List<String> countries;
- public Writable interfaceTest;
--- End diff --
`Writable` represents in this test just an interface. Can you replace it by
another interface to maintain the coverage of this test?
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