After Choosing EC2Snitch you can't migrate off w/o a full cluster restart
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Key: CASSANDRA-3114
URL: https://issues.apache.org/jira/browse/CASSANDRA-3114
Project: Cassandra
Issue Type: Bug
Affects Versions: 0.8.4, 0.7.8
Reporter: Benjamin Coverston
Once you choose the Ec2Snitch the gossip messages will trigger this exception
if you try to move (for example) to the property file snitch:
ERROR [pool-2-thread-11] 2011-08-30 16:38:06,935 Cassandra.java (line 3041)
Internal error processing get_slice
java.lang.NullPointerException
at org.apache.cassandra.locator.Ec2Snitch.getDatacenter(Ec2Snitch.java:84)
at
org.apache.cassandra.locator.DynamicEndpointSnitch.getDatacenter(DynamicEndpointSnitch.java:122)
at
org.apache.cassandra.service.DatacenterReadCallback.assureSufficientLiveNodes(DatacenterReadCallback.java:77)
at org.apache.cassandra.service.StorageProxy.fetchRows(StorageProxy.java:516)
at org.apache.cassandra.service.StorageProxy.read(StorageProxy.java:480)
at
org.apache.cassandra.thrift.CassandraServer.readColumnFamily(CassandraServer.java:109)
at
org.apache.cassandra.thrift.CassandraServer.getSlice(CassandraServer.java:263)
at
org.apache.cassandra.thrift.CassandraServer.multigetSliceInternal(CassandraServer.java:345)
at
org.apache.cassandra.thrift.CassandraServer.get_slice(CassandraServer.java:306)
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$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
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