I wonder if anyone else has seen this recently; I've been trying to make the WriteLock implementation survive server restarts (i.e. reconnecting to another ZK server) with some success. See the latest patch here... https://issues.apache.org/jira/browse/ZOOKEEPER-78
but I've found I can reliably get things to lock up. See the WriteLockTest.java and change the workAroundClosingLastZNodeFails to false and you should be able to run the test yourself and see things lock up. It seems like things lock up when waiting on a Packet being sent to the transport. Sometimes I get a session timed out exception, so if I see that I try and recreate the cxcn object which is maybe causing the issue; I tried patching the ClientCnxn.SendThread.close() method to do a cleanup() to wake up any blocked threads before closing (its in the patch for ZOOKEEPER-78 which also depends on the patch for ZOOKEEPER-84 BTW); am wondering if anyone has a better idea of dealing with a session timeout? -- James ------- http://macstrac.blogspot.com/ Open Source Integration http://open.iona.com
