We are also seeing this in our development environment. We have a 3 node Cassandra 2.0.5 cluster running on Ubuntu 12.04 and are connecting from a Tomcat based application running on Windows using the 2.0.0 Cassandra Java Driver. We have setKeepAlive(true) when building the cluster in the application and this does keep one connection open on the client side to each of the 3 Cassandra nodes, but we still see the build up of 'old' ESTABLISHED connections on each of the Cassandra servers.
We are also getting that same "Unexpected exception during request" exception appearing in the logs ERROR [Native-Transport-Requests:358378] 2014-04-09 12:31:46,824 ErrorMessage.java (line 222) Unexpected exception during request java.io.IOException: Connection reset by peer at sun.nio.ch.FileDispatcherImpl.read0(Native Method) at sun.nio.ch.SocketDispatcher.read(Unknown Source) at sun.nio.ch.IOUtil.readIntoNativeBuffer(Unknown Source) at sun.nio.ch.IOUtil.read(Unknown Source) at sun.nio.ch.SocketChannelImpl.read(Unknown Source) at org.jboss.netty.channel.socket.nio.NioWorker.read(NioWorker.java:64) at org.jboss.netty.channel.socket.nio.AbstractNioWorker.process(AbstractNioWorker.java:109) at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:312) at org.jboss.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:90) at org.jboss.netty.channel.socket.nio.NioWorker.run(NioWorker.java:178) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Initially we thought this was down to a firewall that is between our development machines and the Cassandra nodes but that has now been configured not to 'kill' any connections on port 9042. We also have the Windows firewall on the client side turned off. We still think this is down to our environment as the same application running in Tomcat hosted on a Ubuntu 12.04 server does not appear to be doing this but up to now we can't track down the cause. -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/binary-protocol-server-side-sockets-tp7593879p7593937.html Sent from the cassandra-u...@incubator.apache.org mailing list archive at Nabble.com.