Github user mxm commented on a diff in the pull request:

    https://github.com/apache/flink/pull/290#discussion_r22647093
  
    --- Diff: 
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/bufferprovider/GlobalBufferPool.java
 ---
    @@ -63,8 +64,13 @@ public GlobalBufferPool(int numBuffers, int bufferSize) {
     
                for (int i = 0; i < numBuffers; i++) {
                        try {
    -                           byte[] buf = new byte[bufferSize];
    -                           buffers.add(new MemorySegment(buf));
    +                           // TODO if (config) {
    --- End diff --
    
    Thanks for pointing that out. They are currently used in the memory manager 
of the task manager but not for the GlobalBufferPool. I probably want to fix 
that.


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