NullPointer during a get_range_slice
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                 Key: CASSANDRA-623
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-623
             Project: Cassandra
          Issue Type: Bug
    Affects Versions: 0.5
         Environment: r888913  RF=2 3 node cluster
            Reporter: Dan Di Spaltro


I keep running into this exception on a get_range_slice command.  It seems to 
be a regression because it didn't happen in r886010 but does happen in r888913

2009-12-10_17:17:22.56200 ERROR - Error in ThreadPoolExecutor
2009-12-10_17:17:22.56200 java.lang.RuntimeException: 
java.lang.NullPointerException
2009-12-10_17:17:22.56200       at 
org.apache.cassandra.service.RangeSliceVerbHandler.doVerb(RangeSliceVerbHandler.java:53)
2009-12-10_17:17:22.56200       at 
org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:38)
2009-12-10_17:17:22.56200       at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
2009-12-10_17:17:22.56200       at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
2009-12-10_17:17:22.56200       at java.lang.Thread.run(Thread.java:636)
2009-12-10_17:17:22.56200 Caused by: java.lang.NullPointerException
2009-12-10_17:17:22.56200       at 
org.apache.cassandra.dht.OrderPreservingPartitioner$1.compare(OrderPreservingPartitioner.java:45)
2009-12-10_17:17:22.56200       at 
org.apache.cassandra.dht.OrderPreservingPartitioner$1.compare(OrderPreservingPartitioner.java:42)
2009-12-10_17:17:22.56200       at 
org.apache.cassandra.db.ColumnFamilyStore.getKeyRangeRaw(ColumnFamilyStore.java:1465)
2009-12-10_17:17:22.56200       at 
org.apache.cassandra.db.ColumnFamilyStore.getRangeSlice(ColumnFamilyStore.java:1506)
2009-12-10_17:17:22.56200       at 
org.apache.cassandra.service.RangeSliceVerbHandler.doVerb(RangeSliceVerbHandler.java:39)
2009-12-10_17:17:22.56200       ... 4 more
2009-12-10_17:17:22.57200 ERROR - Fatal exception in thread 
Thread[ROW-READ-STAGE:96,5,main]
2009-12-10_17:17:22.57200 java.lang.RuntimeException: 
java.lang.NullPointerException
2009-12-10_17:17:22.57200       at 
org.apache.cassandra.service.RangeSliceVerbHandler.doVerb(RangeSliceVerbHandler.java:53)
2009-12-10_17:17:22.57200       at 
org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:38)
2009-12-10_17:17:22.57200       at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
2009-12-10_17:17:22.57200       at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
2009-12-10_17:17:22.57200       at java.lang.Thread.run(Thread.java:636)
2009-12-10_17:17:22.57200 Caused by: java.lang.NullPointerException
2009-12-10_17:17:22.57200       at 
org.apache.cassandra.dht.OrderPreservingPartitioner$1.compare(OrderPreservingPartitioner.java:45)
2009-12-10_17:17:22.57200       at 
org.apache.cassandra.dht.OrderPreservingPartitioner$1.compare(OrderPreservingPartitioner.java:42)
2009-12-10_17:17:22.57200       at 
org.apache.cassandra.db.ColumnFamilyStore.getKeyRangeRaw(ColumnFamilyStore.java:1465)
2009-12-10_17:17:22.57200       at 
org.apache.cassandra.db.ColumnFamilyStore.getRangeSlice(ColumnFamilyStore.java:1506)
2009-12-10_17:17:22.57200       at 
org.apache.cassandra.service.RangeSliceVerbHandler.doVerb(RangeSliceVerbHandler.java:39)
2009-12-10_17:17:22.57200       ... 4 more

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