pnowojski 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_r314330433
##########
File path:
flink-streaming-java/src/main/java/org/apache/flink/streaming/runtime/tasks/mailbox/MailboxSender.java
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@@ -33,4 +33,13 @@
* @throws MailboxStateException if the mailbox is quiesced or closed.
*/
void putMail(@Nonnull Runnable letter) throws MailboxStateException;
+
+ /**
+ * Adds the given action to the head of the mailbox.
+ *
+ * @param priorityLetter action to enqueue to the head of the mailbox.
+ * @throws MailboxStateException if the mailbox is quiesced or closed.
+ */
+ void putFirst(@Nonnull Runnable priorityLetter) throws
MailboxStateException;
+
Review comment:
nit: unnecessary new line?
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