Github user greghogan commented on a diff in the pull request:
https://github.com/apache/flink/pull/4295#discussion_r126928245
--- Diff:
flink-tests/src/test/java/org/apache/flink/test/checkpointing/RescalingITCase.java
---
@@ -1035,4 +1040,43 @@ public void restoreState(Integer state) throws
Exception {
counterPartitions.add(state);
}
}
+
+ /**
+ * Copied from io.netty.util.internal.ConcurrentSet.
+ *
+ * @param <E> the type of elements maintained by this set
+ */
+ private static final class ConcurrentSet<E> extends AbstractSet<E>
implements Serializable {
--- End diff --
This dependency was removed in a recent commit so am deleting the class.
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