wsry 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_r341136224
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/buffer/LocalBufferPool.java
##########
@@ -269,6 +267,17 @@ private MemorySegment requestMemorySegmentFromGlobal()
throws IOException {
if (segment != null) {
numberOfRequestedMemorySegments++;
return segment;
+ } else if (isBlocking) {
+ // if the future is completed before the
callback is registered,
+ // the request thread will wait 2s before
polling an available
+ // segment from the global pool, which is not a
big problem.
Review comment:
I think it should work. The advantage of this implementation is that it can
reduce useless wakeup avoid 2 second waiting if the future is completed
immediately.
Maybe we need do tow more things: one is to wrap the
```ExecutionException``` as ```IOException``` or ```InterruptedException``` to
avoid the change of method signature (including the caller); the other is to
complete the available future when buffer pool is destroyed to unblocking the
main thread.
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
With regards,
Apache Git Services
