ERROR [Thrift:22772] 2014-10-13 02:31:43,831 CustomTThreadPoolServer.java (line 224) Error occurred during processing of message.
java.lang.IllegalArgumentException: Comparison method violates its general contract!
        at java.util.TimSort.mergeLo(TimSort.java:747)
        at java.util.TimSort.mergeAt(TimSort.java:483)
        at java.util.TimSort.mergeCollapse(TimSort.java:410)
        at java.util.TimSort.sort(TimSort.java:214)
        at java.util.TimSort.sort(TimSort.java:173)
        at java.util.Arrays.sort(Arrays.java:659)
        at java.util.Collections.sort(Collections.java:217)
        at org.apache.cassandra.locator.AbstractEndpointSnitch.sortByProximity(AbstractEndpointSnitch.java:49)
        at org.apache.cassandra.locator.DynamicEndpointSnitch.sortByProximityWithScore(DynamicEndpointSnitch.java:153)
        at org.apache.cassandra.locator.DynamicEndpointSnitch.sortByProximityWithBadness(DynamicEndpointSnitch.java:171)
        at org.apache.cassandra.locator.DynamicEndpointSnitch.sortByProximity(DynamicEndpointSnitch.java:147)
        at org.apache.cassandra.service.StorageProxy.getLiveSortedEndpoints(StorageProxy.java:1106)
        at org.apache.cassandra.service.StorageProxy.getLiveSortedEndpoints(StorageProxy.java:1100)
        at org.apache.cassandra.service.StorageProxy.fetchRows(StorageProxy.java:881)
        at org.apache.cassandra.service.StorageProxy.read(StorageProxy.java:828)
        at org.apache.cassandra.cql3.statements.SelectStatement.execute(SelectStatement.java:140)
        at org.apache.cassandra.auth.Auth.selectUser(Auth.java:242)
        at org.apache.cassandra.auth.Auth.isExistingUser(Auth.java:72)
        at org.apache.cassandra.service.ClientState.login(ClientState.java:125)
        at org.apache.cassandra.thrift.CassandraServer.login(CassandraServer.java:1254)
        at org.apache.cassandra.thrift.Cassandra$Processor$login.getResult(Cassandra.java:3357)
        at org.apache.cassandra.thrift.Cassandra$Processor$login.getResult(Cassandra.java:3345)
        at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:32)
        at org.apache.thrift.TBaseProcessor.process(TBaseProcessor.java:34)
        at org.apache.cassandra.thrift.CustomTThreadPoolServer$WorkerProcess.run(CustomTThreadPoolServer.java:206)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:724)