zhijiangW commented on a change in pull request #9993:
[FLINK-14498][runtime]Introduce NetworkBufferPool#isAvailable() for interacting
with LocalBufferPool.
URL: https://github.com/apache/flink/pull/9993#discussion_r338959921
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/buffer/NetworkBufferPool.java
##########
@@ -142,14 +147,33 @@ public NetworkBufferPool(
@Nullable
public MemorySegment requestMemorySegment() {
- return availableMemorySegments.poll();
+ synchronized (availabilityHelper) {
Review comment:
We need to adjust the `availableMemorySegments` as common `ArrayDeque`
instead and `synchronized(availableMemorySegments)`.
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