Github user NicoK commented on a diff in the pull request:
https://github.com/apache/flink/pull/4509#discussion_r152239228
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/partition/consumer/RemoteInputChannel.java
---
@@ -462,4 +554,42 @@ public String getMessage() {
expectedSequenceNumber, actualSequenceNumber);
}
}
+
+ private class AvailableBufferQueue {
+
+ /** The current available floating buffers from the fixed
buffer pool. */
+ private final ArrayDeque<Buffer> floatingBuffers;
+
+ /** The current available exclusive buffers from the global
buffer pool. */
+ private final ArrayDeque<Buffer> exclusiveBuffers;
+
+ AvailableBufferQueue() {
+ this.exclusiveBuffers = new ArrayDeque<>();
+ this.floatingBuffers = new ArrayDeque<>();
+ }
+
+ void addExclusiveBuffer(Buffer buffer) {
+ exclusiveBuffers.add(buffer);
+ }
+
+ Buffer takeExclusiveBuffer() {
+ return exclusiveBuffers.poll();
+ }
+
+ void addFloatingBuffer(Buffer buffer) {
+ floatingBuffers.add(buffer);
+ }
+
+ Buffer takeFloatingBuffer() {
--- End diff --
should be `@Nullable`
---
