eolivelli commented on a change in pull request #2888:
URL: https://github.com/apache/bookkeeper/pull/2888#discussion_r754096440



##########
File path: 
bookkeeper-server/src/main/java/org/apache/bookkeeper/proto/PacketProcessorBaseV3.java
##########
@@ -87,25 +87,26 @@ protected void sendResponse(StatusCode code, Object 
response, OpStatsLogger stat
                 requestProcessor.invalidateBlacklist(channel);
             }
         }
-
-        channel.writeAndFlush(response).addListener(new 
ChannelFutureListener() {
-            @Override
-            public void operationComplete(ChannelFuture future) throws 
Exception {
-                long writeElapsedNanos = MathUtils.elapsedNanos(writeNanos);
-                if (!future.isSuccess()) {
-                    requestProcessor.getRequestStats().getChannelWriteStats()
-                        .registerFailedEvent(writeElapsedNanos, 
TimeUnit.NANOSECONDS);
-                } else {
-                    requestProcessor.getRequestStats().getChannelWriteStats()
-                        .registerSuccessfulEvent(writeElapsedNanos, 
TimeUnit.NANOSECONDS);
-                }
-                if (StatusCode.EOK == code) {
-                    
statsLogger.registerSuccessfulEvent(MathUtils.elapsedNanos(enqueueNanos), 
TimeUnit.NANOSECONDS);
-                } else {
-                    
statsLogger.registerFailedEvent(MathUtils.elapsedNanos(enqueueNanos), 
TimeUnit.NANOSECONDS);
+        if (channel.isActive()) {

Review comment:
       what about adding a "ELSE" branch with a log message ?

##########
File path: 
bookkeeper-server/src/main/java/org/apache/bookkeeper/proto/PacketProcessorBase.java
##########
@@ -66,7 +66,9 @@ protected boolean isVersionCompatible() {
     }
 
     protected void sendResponse(int rc, Object response, OpStatsLogger 
statsLogger) {
-        channel.writeAndFlush(response, channel.voidPromise());
+        if (channel.isActive()) {

Review comment:
       what about adding a "ELSE" branch with a log message ?




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