zhijiangW commented on a change in pull request #7368: [FLINK-10742][network] 
Let Netty use Flink's buffers directly in credit-based mode
URL: https://github.com/apache/flink/pull/7368#discussion_r376217236
 
 

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 File path: 
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/netty/CreditBasedPartitionRequestClientHandler.java
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 @@ -290,43 +289,20 @@ private void decodeMsg(Object msg) throws Throwable {
        }
 
        private void decodeBufferOrEvent(RemoteInputChannel inputChannel, 
NettyMessage.BufferResponse bufferOrEvent) throws Throwable {
 
 Review comment:
   The above 252 line would cause NPE issue as I mentioned the concern 
https://github.com/apache/flink/pull/7368#pullrequestreview-354930094

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