Seems you are passing in wrong arguments: Should have been: public ZooKeeper(String connectString, int sessionTimeout, Watcher watcher) throws IOException
What you have in your client code is: On Thu, May 20, 2010 at 5:21 AM, Gregory Haskins <gregory.hask...@gmail.com>wrote: > > > public App() throws Exception { > zk = new ZooKeeper("192.168.1.124:2181", 0, this); > } > > Try use a sensible timeout value such as 20000. The error you are getting means the server has timed out the session. Hope this unstucks you.