Liang Xie created HBASE-9519: -------------------------------- Summary: fix NPE in EncodedScannerV2.getFirstKeyInBlock() Key: HBASE-9519 URL: https://issues.apache.org/jira/browse/HBASE-9519 Project: HBase Issue Type: Improvement Components: HFile Affects Versions: 0.98.0, 0.96.1 Reporter: Liang Xie Assignee: Liang Xie
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