1u0 commented on a change in pull request #9383: [FLINK-13248] [runtime] Adding 
processing of downstream messages in AsyncWaitOperator's wait loops
URL: https://github.com/apache/flink/pull/9383#discussion_r317627442
 
 

 ##########
 File path: 
flink-streaming-java/src/main/java/org/apache/flink/streaming/runtime/tasks/mailbox/TaskMailboxImpl.java
 ##########
 @@ -27,19 +27,19 @@
 
 import java.util.ArrayList;
 import java.util.Collections;
+import java.util.Iterator;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Optional;
 import java.util.concurrent.locks.Condition;
 import java.util.concurrent.locks.ReentrantLock;
 
 /**
- * Implementation of {@link Mailbox} inspired by {@link 
java.util.concurrent.ArrayBlockingQueue} and tailored towards
+ * Implementation of {@link TaskMailbox} inspired by {@link 
java.util.concurrent.ArrayBlockingQueue} and tailored towards
 
 Review comment:
   Not related to changes in this PR, but `ArrayBlockingQueue` notice is 
outdated. The implementation is not using ring buffer anymore.

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