java.lang.AssertionError: null


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Stack trace

java.lang.AssertionError: null
	at org.apache.cassandra.db.rows.BufferCell.<init>(BufferCell.java:49)[apache-cassandra-3.3.0.jar:3.3.0]
	at org.apache.cassandra.db.rows.BufferCell.tombstone(BufferCell.java:88)[apache-cassandra-3.3.0.jar:3.3.0]
	at org.apache.cassandra.db.rows.BufferCell.tombstone(BufferCell.java:83)[apache-cassandra-3.3.0.jar:3.3.0]
	at org.apache.cassandra.db.rows.BufferCell.purge(BufferCell.java:175)[apache-cassandra-3.3.0.jar:3.3.0]
	at org.apache.cassandra.db.rows.ComplexColumnData.lambda$purge$107(ComplexColumnData.java:165)[apache-cassandra-3.3.0.jar:3.3.0]
	at org.apache.cassandra.utils.btree.BTree$FiltrationTracker.apply(BTree.java:650)[apache-cassandra-3.3.0.jar:3.3.0]
	at org.apache.cassandra.utils.btree.BTree.transformAndFilter(BTree.java:693)[apache-cassandra-3.3.0.jar:3.3.0]
	at org.apache.cassandra.utils.btree.BTree.transformAndFilter(BTree.java:668)[apache-cassandra-3.3.0.jar:3.3.0]
	at org.apache.cassandra.db.rows.ComplexColumnData.transformAndFilter(ComplexColumnData.java:170)[apache-cassandra-3.3.0.jar:3.3.0]
	at org.apache.cassandra.db.rows.ComplexColumnData.purge(ComplexColumnData.java:165)[apache-cassandra-3.3.0.jar:3.3.0]
	at org.apache.cassandra.db.rows.ComplexColumnData.purge(ComplexColumnData.java:43)[apache-cassandra-3.3.0.jar:3.3.0]
	at org.apache.cassandra.db.rows.BTreeRow.lambda$purge$102(BTreeRow.java:333)[apache-cassandra-3.3.0.jar:3.3.0]
	at org.apache.cassandra.utils.btree.BTree$FiltrationTracker.apply(BTree.java:650)[apache-cassandra-3.3.0.jar:3.3.0]
	at org.apache.cassandra.utils.btree.BTree.transformAndFilter(BTree.java:693)[apache-cassandra-3.3.0.jar:3.3.0]
	at org.apache.cassandra.utils.btree.BTree.transformAndFilter(BTree.java:668)[apache-cassandra-3.3.0.jar:3.3.0]
	at org.apache.cassandra.db.rows.BTreeRow.transformAndFilter(BTreeRow.java:338)[apache-cassandra-3.3.0.jar:3.3.0]
	at org.apache.cassandra.db.rows.BTreeRow.purge(BTreeRow.java:333)[apache-cassandra-3.3.0.jar:3.3.0]
	at org.apache.cassandra.db.partitions.PurgeFunction.applyToRow(PurgeFunction.java:88)[apache-cassandra-3.3.0.jar:3.3.0]
	at org.apache.cassandra.db.transform.BaseRows.hasNext(BaseRows.java:116)[apache-cassandra-3.3.0.jar:3.3.0]
	at org.apache.cassandra.db.rows.UnfilteredRowIteratorSerializer.serialize(UnfilteredRowIteratorSerializer.java:133)[apache-cassandra-3.3.0.jar:3.3.0]
	at org.apache.cassandra.db.rows.UnfilteredRowIteratorSerializer.serialize(UnfilteredRowIteratorSerializer.java:89)[apache-cassandra-3.3.0.jar:3.3.0]
	at org.apache.cassandra.db.rows.UnfilteredRowIteratorSerializer.serialize(UnfilteredRowIteratorSerializer.java:79)[apache-cassandra-3.3.0.jar:3.3.0]
	at org.apache.cassandra.db.partitions.UnfilteredPartitionIterators$Serializer.serialize(UnfilteredPartitionIterators.java:294)[apache-cassandra-3.3.0.jar:3.3.0]
	at org.apache.cassandra.db.ReadResponse$LocalDataResponse.build(ReadResponse.java:134)[apache-cassandra-3.3.0.jar:3.3.0]
	at org.apache.cassandra.db.ReadResponse$LocalDataResponse.<init>(ReadResponse.java:127)[apache-cassandra-3.3.0.jar:3.3.0]
	at org.apache.cassandra.db.ReadResponse$LocalDataResponse.<init>(ReadResponse.java:123)[apache-cassandra-3.3.0.jar:3.3.0]
	at org.apache.cassandra.db.ReadResponse.createDataResponse(ReadResponse.java:65)[apache-cassandra-3.3.0.jar:3.3.0]
	at org.apache.cassandra.db.ReadCommand.createResponse(ReadCommand.java:292)[apache-cassandra-3.3.0.jar:3.3.0]
	at org.apache.cassandra.db.ReadCommandVerbHandler.doVerb(ReadCommandVerbHandler.java:50)[apache-cassandra-3.3.0.jar:3.3.0]
	at org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:64)[apache-cassandra-3.3.0.jar:3.3.0]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)[na:1.8.0_111]
	at org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$FutureTask.run(AbstractLocalAwareExecutorService.java:164)[apache-cassandra-3.3.0.jar:3.3.0]
	at org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$LocalSessionFutureTask.run(AbstractLocalAwareExecutorService.java:136)[apache-cassandra-3.3.0.jar:3.3.0]
	at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:105)[apache-cassandra-3.3.0.jar:3.3.0]
	at java.lang.Thread.run(Thread.java:745)[na:1.8.0_111]

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