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_r338962572
##########
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) {
+ final MemorySegment segment =
availableMemorySegments.poll();
+ if (availableMemorySegments.isEmpty() && segment !=
null) {
+ availabilityHelper.resetUnavailable();
+ }
+ return segment;
+ }
}
public void recycle(MemorySegment segment) {
// Adds the segment back to the queue, which does not
immediately free the memory
// however, since this happens when references to the global
pool are also released,
// making the availableMemorySegments queue and its contained
object reclaimable
- availableMemorySegments.add(checkNotNull(segment));
+ checkNotNull(segment);
+ CompletableFuture<?> toNotify = null;
Review comment:
If possible we need to consider deduplicating codes with below
`recycleMemorySegments(Collection<MemorySegment> segments, int size)`. There is
only `availableMemorySegments.add(segment);` different.
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