StefanRRichter commented on a change in pull request #8692: [FLINK-12804]
Introduce mailbox-based ExecutorService
URL: https://github.com/apache/flink/pull/8692#discussion_r302981990
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File path:
flink-streaming-java/src/main/java/org/apache/flink/streaming/runtime/tasks/mailbox/MailboxImpl.java
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@@ -80,7 +58,7 @@
private final Condition notEmpty;
/**
- * Number of letters in the mailbox.
+ * Number of letters in the mailbox. We track it separately from the
queue#size to avoid locking on {@link #hasMail()}.
Review comment:
I tried that, it did not work.
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