Jetty 8.1 flooding the log file with “Dispatched Failed” messages

问题

We are using Jetty 8.1 as an embedded HTTP server. Under overload conditions the server sometimes starts flooding the log file with these messages:

warn: java.util.concurrent.RejectedExecutionException
warn: Dispatched Failed! SCEP@76107610{l(...)<->r(...),d=false,open=true,ishut=false,oshut=false,rb=false,wb=false,w=true,i=1r}...

The same message is repeated thousands of times, and the amount of logging appears to slow down the whole system. The messages itself are fine, our request handler ist just to slow to process the requests in time. But the huge number of repeated messages makes things actually worse and makes it more difficult for the system to recover from the overload.

So, my question is: is this a normal behaviour, or are we doing something wrong? Here is how we set up the server:

Server server = new Server();
SelectChannelConnector connector = new SelectChannelConnector();
connector.setAcceptQueueSize( 10 );
server.setConnectors( new Connector[]{ connector } );
server.setThreadPool( new ExecutorThreadPool( 32, 32, 60, TimeUnit.SECONDS,
                                              new ArrayBlockingQueue<Runnable>( 10 )));

回答1:

The SelectChannelEndPoint is the origin of this log message.

To not see it, just set your named logger of org.eclipse.jetty.io.nio.SelectChannelEndPoint to LEVEL=OFF.

Now as for why you see it, that is more interesting to the developers of Jetty. Can you detail what specific version of Jetty you are using and also what specific JVM you are using?

来源：https://stackoverflow.com/questions/16592537/jetty-8-1-flooding-the-log-file-with-dispatched-failed-messages