No node found for key validity:35C9A4AF10D1ECA080AA78138BDAB27C-n2SERVER_ID (nodeId: n2SERVER_ID, known nodeIds: [n2, n1]

[Gary Su]

18-Aug-2015 15:34:02.493 WARNING [http-nio-8084-exec-7] de.javakaffee.web.msm.LockingStrategy.onBackupWithoutLoadedSession An error when trying to load/update validity info.

 java.lang.IllegalArgumentException: No node found for key validity:35C9A4AF10D1ECA080AA78138BDAB27C-n2SERVER_ID (nodeId: n2SERVER_ID, known nodeIds: [n2, n1])

at de.javakaffee.web.msm.SuffixBasedNodeLocator.getPrimary(SuffixBasedNodeLocator.java:100)

at net.spy.memcached.MemcachedConnection.addOperation(MemcachedConnection.java:1205)

at net.spy.memcached.MemcachedConnection.enqueueOperation(MemcachedConnection.java:1185)

at net.spy.memcached.MemcachedClient.asyncGet(MemcachedClient.java:1044)

at net.spy.memcached.MemcachedClient.get(MemcachedClient.java:1229)

at net.spy.memcached.MemcachedClient.get(MemcachedClient.java:1256)

at de.javakaffee.web.msm.LockingStrategy.loadSessionValidityInfoForValidityKey(LockingStrategy.java:333)

at de.javakaffee.web.msm.LockingStrategy.onBackupWithoutLoadedSession(LockingStrategy.java:231)

at de.javakaffee.web.msm.LockingStrategyAuto.onBackupWithoutLoadedSession(LockingStrategyAuto.java:71)

at de.javakaffee.web.msm.MemcachedSessionService.backupSession(MemcachedSessionService.java:1012)

at de.javakaffee.web.msm.RequestTrackingHostValve.backupSession(RequestTrackingHostValve.java:230)

at de.javakaffee.web.msm.RequestTrackingHostValve.invoke(RequestTrackingHostValve.java:159)

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)

at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)

at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668)

at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1527)

at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1484)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

at java.lang.Thread.run(Thread.java:745)

It always happens? Plaase tell me what is wrong with my property?

          <Manager className="de.javakaffee.web.msm.MemcachedBackupSessionManager"  

                   memcachedNodes="n1:10.10.103.249:11211,n2:10.10.137.200:11211"

                   sticky="false" 

                   sessionBackupAsync="false"

                   lockingMode="auto"

                   requestUriIgnorePattern=".*\.(ico|png|gif|jpg|css|js)$" 

                   transcoderFactoryClass="de.javakaffee.web.msm.serializer.kryo.KryoTranscoderFactory"/>