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Subject [GitHub] ivmaykov commented on a change in pull request #753: ZOOKEEPER-3204: Reconfig tests are constantly failing on 3.5 after applying Java 11 fix
Date Wed, 06 Feb 2019 15:57:20 GMT
ivmaykov commented on a change in pull request #753: ZOOKEEPER-3204: Reconfig tests are constantly
failing on 3.5 after applying Java 11 fix
URL: https://github.com/apache/zookeeper/pull/753#discussion_r254331186
 
 

 ##########
 File path: zookeeper-server/src/main/java/org/apache/zookeeper/server/NettyServerCnxn.java
 ##########
 @@ -303,19 +277,126 @@ private boolean checkFourLetterWord(final Channel channel,
         }
     }
 
-    public void receiveMessage(ChannelBuffer message) {
+    /**
+     * Process incoming message. This should only be called from the event
+     * loop thread.
+     * @param buf the message bytes to process.
+     */
+    void processMessage(ByteBuf buf) {
+        assert channel.eventLoop().inEventLoop();
+        if (LOG.isDebugEnabled()) {
+            LOG.debug("0x{} queuedBuffer: {}",
+                    Long.toHexString(sessionId),
+                    queuedBuffer);
+        }
+
+        if (LOG.isTraceEnabled()) {
+            LOG.trace("0x{} buf {}",
+                    Long.toHexString(sessionId),
+                    ByteBufUtil.hexDump(buf));
+        }
+
+        if (throttled.get()) {
+            LOG.debug("Received message while throttled");
+            // we are throttled, so we need to queue
+            if (queuedBuffer == null) {
+                LOG.debug("allocating queue");
+                queuedBuffer = channel.alloc().buffer(buf.readableBytes());
 
 Review comment:
   This was me trying to preserve the original behavior as much as possible while doing the
netty3 -> netty4 conversion. But some good ideas here, I'll look into optimizing it in
a follow-up.

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