wsry commented on a change in pull request #11877:
URL: https://github.com/apache/flink/pull/11877#discussion_r661998885
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/partition/PipelinedSubpartition.java
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@@ -288,9 +288,7 @@ BufferAndBacklog pollBuffer() {
if (buffers.isEmpty()) {
flushRequested = false;
- }
-
- while (!buffers.isEmpty()) {
+ } else {
Review comment:
After the changes, if the first buffer is finished and empty. The empty
buffer will be sent to the downstream to release the allocated credit for it
instead of recycled directly.
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