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Liang Xie commented on HBASE-9519: ---------------------------------- any more comments? or could it go ahead to trunk? > fix NPE in EncodedScannerV2.getFirstKeyInBlock() > ------------------------------------------------ > > Key: HBASE-9519 > URL: https://issues.apache.org/jira/browse/HBASE-9519 > Project: HBase > Issue Type: Bug > Components: HFile > Affects Versions: 0.98.0, 0.96.1 > Reporter: Liang Xie > Assignee: Liang Xie > Attachments: HBASE-9519.txt, HBASE-9519-v2.txt > > > we observed a reproducable NPE while scanning special table under special > condition in our IntegratedTesting scenario, it was fixed by appling the > attached patch. > org.apache.hadoop.hbase.client.ScannerCallable@67ee75a5, java.io.IOException: > java.io.IOException: java.lang.NullPointerException > at > org.apache.hadoop.hbase.regionserver.HRegionServer.convertThrowableToIOE(HRegionServer.java:1186) > at > org.apache.hadoop.hbase.regionserver.HRegionServer.convertThrowableToIOE(HRegionServer.java:1175) > at > org.apache.hadoop.hbase.regionserver.HRegionServer.openScanner(HRegionServer.java:2391) > at sun.reflect.GeneratedMethodAccessor24.invoke(Unknown Source) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > at java.lang.reflect.Method.invoke(Method.java:597) > at > org.apache.hadoop.hbase.ipc.SecureRpcEngine$Server.call(SecureRpcEngine.java:456) > at org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:1426) > Caused by: java.lang.NullPointerException > at > org.apache.hadoop.hbase.io.hfile.HFileReaderV2$EncodedScannerV2.getFirstKeyInBlock(HFileReaderV2.java:1071) > at > org.apache.hadoop.hbase.io.hfile.HFileReaderV2$AbstractScannerV2.seekBefore(HFileReaderV2.java:547) > at > org.apache.hadoop.hbase.io.HalfStoreFileReader$1.seekBefore(HalfStoreFileReader.java:159) > at > org.apache.hadoop.hbase.io.HalfStoreFileReader$1.seekBefore(HalfStoreFileReader.java:142) > at > org.apache.hadoop.hbase.io.HalfStoreFileReader.getLastKey(HalfStoreFileReader.java:267) > at > org.apache.hadoop.hbase.regionserver.StoreFile$Reader.passesKeyRangeFilter(StoreFile.java:1543) > at > org.apache.hadoop.hbase.regionserver.StoreFileScanner.shouldUseScanner(StoreFileScanner.java:375) > at > org.apache.hadoop.hbase.regionserver.StoreScanner.selectScannersFrom(StoreScanner.java:298) > at > org.apache.hadoop.hbase.regionserver.StoreScanner.getScannersNoCompaction(StoreScanner.java:262) > at > org.apache.hadoop.hbase.regionserver.StoreScanner.<init>(StoreScanner.java:149) > at org.apache.hadoop.hbase.regionserver.Store.getScanner(Store.java:2122) > at > org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.<init>(HRegion.java:3460) > at > org.apache.hadoop.hbase.regionserver.HRegion.instantiateRegionScanner(HRegion.java:1645) > at org.apache.hadoop.hbase.regionserver.HRegion.getScanner(HRegion.java:1635) > at org.apache.hadoop.hbase.regionserver.HRegion.getScanner(HRegion.java:1610) > at > org.apache.hadoop.hbase.regionserver.HRegionServer.openScanner(HRegionServer.java:2377) > ... 5 more -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira