wsry commented on a change in pull request #11877:
URL: https://github.com/apache/flink/pull/11877#discussion_r662011666
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/partition/consumer/LocalInputChannel.java
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@@ -265,6 +265,13 @@ public void run() {
channelInfo,
channelStatePersister,
next.getSequenceNumber());
+
+ // ignore the empty buffer directly
+ if (buffer.readableBytes() == 0) {
+ buffer.recycleBuffer();
Review comment:
Before this change, the buffer is recycled in the pollBuffer method of
Subpartition because no empty buffer is sent.
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