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_r338958514
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/buffer/NetworkBufferPool.java
##########
@@ -170,9 +194,16 @@ public void recycle(MemorySegment segment) {
throw new IllegalStateException("Buffer
pool is destroyed.");
}
- final MemorySegment segment =
availableMemorySegments.poll(2, TimeUnit.SECONDS);
- if (segment != null) {
- segments.add(segment);
+ synchronized (availabilityHelper) {
+ final MemorySegment segment =
availableMemorySegments.poll();
Review comment:
We could deduplicate some common codes with above `#requestMemorySegment()`.
`@Nullable
private MemorySegment internalRequestMemorySegment() {
assert Thread.holdsLock(availableMemorySegments);
final MemorySegment segment = availableMemorySegments.poll();
if (availableMemorySegments.isEmpty() && segment != null) {
availabilityHelper.resetUnavailable();
}
return segment;
}`
Then we could refactor here as
`
final MemorySegment segment = internalRequestMemorySegment();
if (segment == null) {
availabilityHelper.wait(2000);
}
`
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