pnowojski 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_r341203502
 
 

 ##########
 File path: 
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/buffer/LocalBufferPool.java
 ##########
 @@ -231,25 +230,39 @@ private BufferBuilder toBufferBuilder(MemorySegment 
memorySegment) {
 
        @Nullable
        private MemorySegment requestMemorySegment(boolean isBlocking) throws 
InterruptedException, IOException {
+               if (!isBlocking) {
 
 Review comment:
   Sorry for adding a bit more of the confussion, but I just spotted one more 
thing: `requestMemorySegment(boolean isBlocking)` is actually used only in two 
places, one blockingly and the other non blocking. I think we can get rid of 
this `if (!isBlocking)` condition by simply inlining this method.
   
   Also it would also get rid of the ugly `try/catch(InterruptedException)` in 
the non blocking method.

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