Github user NicoK commented on a diff in the pull request:
https://github.com/apache/flink/pull/4735#discussion_r141392529
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/partition/consumer/RemoteInputChannel.java
---
@@ -87,6 +88,12 @@
/** The number of available buffers that have not been announced to the
producer yet. */
private final AtomicInteger unannouncedCredit = new AtomicInteger(0);
+ /** The number of unsent buffers in the producer's sub partition. */
+ private final AtomicInteger senderBacklog = new AtomicInteger(0);
+
+ /** The tag indicates whether this channel is waiting for additional
floating buffers from the buffer pool. */
+ private final AtomicBoolean isWaitingFloatingBuffers = new
AtomicBoolean(false);
--- End diff --
better: `isWaitingForFloatingBuffers`
---
