amaliujia commented on a change in pull request #272:
URL: https://github.com/apache/incubator-ratis/pull/272#discussion_r523397236



##########
File path: 
ratis-netty/src/main/java/org/apache/ratis/netty/server/NettyServerStreamRpc.java
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@@ -326,8 +327,11 @@ private StreamInfo newStreamInfo(ByteBuf buf) {
   }
 
   static long writeTo(ByteBuf buf, DataStream stream) {
-    final WritableByteChannel channel = stream.getWritableByteChannel();
     long byteWritten = 0;
+    if (stream == null) {

Review comment:
       Done




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