zhijiangW commented on a change in pull request #11155: 
[FLINK-14818][benchmark] Fix receiving InputGate setup of 
StreamNetworkBenchmarkEnvironment.
URL: https://github.com/apache/flink/pull/11155#discussion_r382395379
 
 

 ##########
 File path: 
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/partition/consumer/SingleInputGateFactory.java
 ##########
 @@ -243,7 +244,10 @@ private InputChannel createKnownInputChannel(
                return () -> bufferPoolFactory.createBufferPool(0, 
floatingNetworkBuffersPerGate);
        }
 
-       private static class ChannelStatistics {
+       /**
+        * Statistics of input channels.
 
 Review comment:
   nit: Not really necessary because it does not provide any rich informations 
than the class name.

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