Critical Description
RangerAuthorizationCoprocessor and ColumnIterator need to be modified to safely cast objects into Cell rather than KeyValue as currently done.
In certain cases, the above issue causes HBase regionserver to throw the below exception.
2017-02-07 18:07:28,786 ERROR [RpcServer.FifoWFPBQ.default.handler=18,queue=0,port=16020] coprocessor.CoprocessorHost: The coprocessor org.apache.ranger.authorization.hbase.RangerAuthorizationCoprocessor threw java.lang.ClassCastException: org.apache.hadoop.hbase.io.encoding.BufferedDataBlockEncoder$ClonedSeekerState cannot be cast to org.apache.hadoop.hbase.KeyValue java.lang.ClassCastException: org.apache.hadoop.hbase.io.encoding.BufferedDataBlockEncoder$ClonedSeekerState cannot be cast to org.apache.hadoop.hbase.KeyValue at org.apache.ranger.authorization.hbase.ColumnIterator.next(ColumnIterator.java:76) at org.apache.ranger.authorization.hbase.ColumnIterator.next(ColumnIterator.java:32) at org.apache.ranger.authorization.hbase.RangerAuthorizationCoprocessor.getColumnFamilies(RangerAuthorizationCoprocessor.java:247) at org.apache.ranger.authorization.hbase.RangerAuthorizationCoprocessor.evaluateAccess(RangerAuthorizationCoprocessor.java:337) at org.apache.ranger.authorization.hbase.RangerAuthorizationCoprocessor.requirePermission(RangerAuthorizationCoprocessor.java:535) at org.apache.ranger.authorization.hbase.RangerAuthorizationCoprocessor.prePut(RangerAuthorizationCoprocessor.java:1029) at org.apache.ranger.authorization.hbase.RangerAuthorizationCoprocessor.prePut(RangerAuthorizationCoprocessor.java:1091) at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost$30.call(RegionCoprocessorHost.java:885) at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost$RegionOperation.call(RegionCoprocessorHost.java:1660) at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.execOperation(RegionCoprocessorHost.java:1734) at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.execOperation(RegionCoprocessorHost.java:1692) at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.prePut(RegionCoprocessorHost.java:881) at org.apache.hadoop.hbase.regionserver.HRegion.doPreMutationHook(HRegion.java:3006) at org.apache.hadoop.hbase.regionserver.HRegion.batchMutate(HRegion.java:2981) at org.apache.hadoop.hbase.regionserver.HRegion.batchMutate(HRegion.java:2927) at org.apache.phoenix.coprocessor.UngroupedAggregateRegionObserver.rebuildIndices(UngroupedAggregateRegionObserver.java:848) at org.apache.phoenix.coprocessor.UngroupedAggregateRegionObserver.doPostScannerOpen(UngroupedAggregateRegionObserver.java:304) at org.apache.phoenix.coprocessor.BaseScannerRegionObserver.postScannerOpen(BaseScannerRegionObserver.java:217) at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost$52.call(RegionCoprocessorHost.java:1301) at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost$RegionOperation.call(RegionCoprocessorHost.java:1660) at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.execOperation(RegionCoprocessorHost.java:1734) at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.execOperationWithResult(RegionCoprocessorHost.java:1699) at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.postScannerOpen(RegionCoprocessorHost.java:1296) at org.apache.hadoop.hbase.regionserver.RSRpcServices.scan(RSRpcServices.java:2358) at org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:32385) at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2141) at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:112) at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:187) at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:167)