You probably have other nodes that are NOT using the snitch yet, so they haven't populated DC/RACK info yet. The exceptions will stop when all snitches have been changed.
On Wed, Aug 10, 2011 at 7:55 PM, Viliam Holub <viliam.ho...@ucd.ie> wrote: > > Hi, > > I tried to switch to Ec2Snith. Although it correctly found the region: > > INFO 23:18:00,643 EC2Snitch using region: eu-west, zone: 1a. > > it started to report NullPointerException every second: > > ERROR 00:23:40,268 Internal error processing get_slice > java.lang.NullPointerException > at > org.apache.cassandra.locator.Ec2Snitch.getDatacenter(Ec2Snitch.java:93) > at > org.apache.cassandra.locator.DynamicEndpointSnitch.getDatacenter(DynamicEndpointSnitch.java:122) > at > org.apache.cassandra.locator.OldNetworkTopologyStrategy.calculateNaturalEndpoints(OldNetworkTopologyStrategy.java:64) > at > org.apache.cassandra.locator.AbstractReplicationStrategy.getNaturalEndpoints(AbstractReplicationStrategy.java:99) > at > org.apache.cassandra.service.StorageService.getLiveNaturalEndpoints(StorageService.java:1708) > at > org.apache.cassandra.service.StorageService.getLiveNaturalEndpoints(StorageService.java:1702) > at > org.apache.cassandra.service.StorageProxy.fetchRows(StorageProxy.java:511) > at > org.apache.cassandra.service.StorageProxy.read(StorageProxy.java:480) > at > org.apache.cassandra.thrift.CassandraServer.readColumnFamily(CassandraServer.java:126) > at > org.apache.cassandra.thrift.CassandraServer.getSlice(CassandraServer.java:280) > at > org.apache.cassandra.thrift.CassandraServer.multigetSliceInternal(CassandraServer.java:362) > at > org.apache.cassandra.thrift.CassandraServer.get_slice(CassandraServer.java:323) > at > org.apache.cassandra.thrift.Cassandra$Processor$get_slice.process(Cassandra.java:3033) > at > org.apache.cassandra.thrift.Cassandra$Processor.process(Cassandra.java:2889) > at > org.apache.cassandra.thrift.CustomTThreadPoolServer$WorkerProcess.run(CustomTThreadPoolServer.java:187) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) > at java.lang.Thread.run(Thread.java:636) > > Am I doing something wrong? > > Thanks, > Viliam > >
