pnowojski commented on a change in pull request #10177: [FLINK-14747] Fix
performance regression with latest changes to Mailbox
URL: https://github.com/apache/flink/pull/10177#discussion_r346192517
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File path:
flink-streaming-java/src/main/java/org/apache/flink/streaming/runtime/tasks/mailbox/TaskMailboxImpl.java
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@@ -80,6 +80,11 @@
*/
private final Deque<Mail> batch = new ArrayDeque<>();
+ /**
+ * Performance optimization where hasNewMail == !queue.isEmpty().
Review comment:
comment that it doesn't take the `batch` into account?
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