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Sergey Soldatov commented on HBASE-15884: ----------------------------------------- Bug valid for 2.0 as well {noformat} java.lang.NullPointerException at org.apache.hadoop.hbase.CellComparator.compareRows(CellComparator.java:351) at org.apache.hadoop.hbase.regionserver.StoreFileScanner.skipKVsNewerThanReadpoint(StoreFileScanner.java:259) at org.apache.hadoop.hbase.regionserver.StoreFileScanner.seekToPreviousRow(StoreFileScanner.java:493) at org.apache.hadoop.hbase.regionserver.StoreFileScanner.backwardSeek(StoreFileScanner.java:537) at org.apache.hadoop.hbase.regionserver.ReversedStoreScanner.seekScanners(ReversedStoreScanner.java:82) at org.apache.hadoop.hbase.regionserver.StoreScanner.resetScannerStack(StoreScanner.java:800) at org.apache.hadoop.hbase.regionserver.StoreScanner.checkReseek(StoreScanner.java:766) at org.apache.hadoop.hbase.regionserver.StoreScanner.next(StoreScanner.java:488) at org.apache.hadoop.hbase.regionserver.KeyValueHeap.next(KeyValueHeap.java:153) at org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.populateResult(HRegion.java:5737) at org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.nextInternal(HRegion.java:5883) at org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.nextRaw(HRegion.java:5676) at org.apache.hadoop.hbase.regionserver.RSRpcServices.scan(RSRpcServices.java:2743) at org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:34818) at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2273) at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:116) at org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:137) at org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:112) at java.lang.Thread.run(Thread.java:745) {noformat} > NPE in StoreFileScanner during reverse scan > ------------------------------------------- > > Key: HBASE-15884 > URL: https://issues.apache.org/jira/browse/HBASE-15884 > Project: HBase > Issue Type: Bug > Components: Scanners > Affects Versions: 2.0.0, 1.2.1 > Reporter: Sergey Soldatov > > Here is a part of {{skipKVsNewerThanReadpoint}} method: > {noformat} > hfs.next(); > setCurrentCell(hfs.getKeyValue()); > if (this.stopSkippingKVsIfNextRow > && getComparator().compareRows(cur.getRowArray(), > cur.getRowOffset(), > cur.getRowLength(), startKV.getRowArray(), > startKV.getRowOffset(), > startKV.getRowLength()) > 0) { > {noformat} > If hfs has no more KVs, cur will be set to Null and on on the next step will > throw NPE. -- This message was sent by Atlassian JIRA (v6.3.4#6332)