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https://issues.apache.org/jira/browse/HBASE-10933?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kashif J S updated HBASE-10933:
-------------------------------
Attachment: HBASE-10933-trunk-v1.patch
Patch also for trunk version to solve the issue of Single region with single KV
generating wrong .regioninfo file with same start and end key. Also added
JUnit TCs for test
> hbck -fixHdfsOrphans is not working properly it throws null pointer exception
> -----------------------------------------------------------------------------
>
> Key: HBASE-10933
> URL: https://issues.apache.org/jira/browse/HBASE-10933
> Project: HBase
> Issue Type: Bug
> Components: hbck
> Affects Versions: 0.94.16, 0.98.2
> Reporter: Deepak Sharma
> Assignee: Kashif J S
> Priority: Critical
> Attachments: HBASE-10933-0.94-v1.patch, HBASE-10933-trunk-v1.patch,
> TestResults-0.94.txt
>
>
> if we regioninfo file is not existing in hbase region then if we run hbck
> repair or hbck -fixHdfsOrphans
> then it is not able to resolve this problem it throws null pointer exception
> {code}
> 2014-04-08 20:11:49,750 INFO [main] util.HBaseFsck
> (HBaseFsck.java:adoptHdfsOrphans(470)) - Attempting to handle orphan hdfs
> dir:
> hdfs://10.18.40.28:54310/hbase/TestHdfsOrphans1/5a3de9ca65e587cb05c9384a3981c950
> java.lang.NullPointerException
> at
> org.apache.hadoop.hbase.util.HBaseFsck$TableInfo.access$000(HBaseFsck.java:1939)
> at
> org.apache.hadoop.hbase.util.HBaseFsck.adoptHdfsOrphan(HBaseFsck.java:497)
> at
> org.apache.hadoop.hbase.util.HBaseFsck.adoptHdfsOrphans(HBaseFsck.java:471)
> at
> org.apache.hadoop.hbase.util.HBaseFsck.restoreHdfsIntegrity(HBaseFsck.java:591)
> at
> org.apache.hadoop.hbase.util.HBaseFsck.offlineHdfsIntegrityRepair(HBaseFsck.java:369)
> at org.apache.hadoop.hbase.util.HBaseFsck.onlineHbck(HBaseFsck.java:447)
> at org.apache.hadoop.hbase.util.HBaseFsck.exec(HBaseFsck.java:3769)
> at org.apache.hadoop.hbase.util.HBaseFsck.run(HBaseFsck.java:3587)
> at
> com.huawei.isap.test.smartump.hadoop.hbase.HbaseHbckRepair.repairToFixHdfsOrphans(HbaseHbckRepair.java:244)
> at
> com.huawei.isap.test.smartump.hadoop.hbase.HbaseHbckRepair.setUp(HbaseHbckRepair.java:84)
> at junit.framework.TestCase.runBare(TestCase.java:132)
> at junit.framework.TestResult$1.protect(TestResult.java:110)
> at junit.framework.TestResult.runProtected(TestResult.java:128)
> at junit.framework.TestResult.run(TestResult.java:113)
> at junit.framework.TestCase.run(TestCase.java:124)
> at junit.framework.TestSuite.runTest(TestSuite.java:243)
> at junit.framework.TestSuite.run(TestSuite.java:238)
> at
> org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:83)
> at
> org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
> at
> org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
> at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
> at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
> at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
> at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
> {code}
> problem i got it is because since in HbaseFsck class
> {code}
> private void adoptHdfsOrphan(HbckInfo hi)
> {code}
> we are intializing tableinfo using SortedMap<String, TableInfo> tablesInfo
> object
> {code}
> TableInfo tableInfo = tablesInfo.get(tableName);
> {code}
> but in private SortedMap<String, TableInfo> loadHdfsRegionInfos()
> {code}
> for (HbckInfo hbi: hbckInfos) {
> if (hbi.getHdfsHRI() == null) {
> // was an orphan
> continue;
> }
> {code}
> we have check if a region is orphan then that table will can not be added in
> SortedMap<String, TableInfo> tablesInfo
> so later while using this we get null pointer exception
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