Has anyone seen this particular NPE before from Cassandra? This is on 1.0.8. It seems to happen transiently on multiple nodes in my cluster, every so often, and goes away.
ERROR [Thrift:45] 2012-03-26 19:59:12,024 Cassandra.java (line 3041) Internal error processing get_slice java.lang.NullPointerException at org.apache.cassandra.db.SliceFromReadCommand.maybeGenerateRetryCommand(SliceFromReadCommand.java:76) at org.apache.cassandra.service.StorageProxy.fetchRows(StorageProxy.java:724) at org.apache.cassandra.service.StorageProxy.read(StorageProxy.java:564) at org.apache.cassandra.thrift.CassandraServer.readColumnFamily(CassandraServer.java:128) at org.apache.cassandra.thrift.CassandraServer.getSlice(CassandraServer.java:283) at org.apache.cassandra.thrift.CassandraServer.multigetSliceInternal(CassandraServer.java:365) at org.apache.cassandra.thrift.CassandraServer.get_slice(CassandraServer.java:326) 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) The line in question is (I think) the one below, so it looks like the column family reference for a row can sometimes be null? int liveColumnsInRow = row != null ? row.cf.getLiveColumnCount() : 0; Thanks, John