Deepak Sharma created HBASE-10933:
-------------------------------------
Summary: 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
Reporter: Deepak Sharma
Priority: Critical
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
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)
problem i got it is because since in HbaseFsck class
private void adoptHdfsOrphan(HbckInfo hi)
we are intializing tableinfo using SortedMap<String, TableInfo> tablesInfo
object
TableInfo tableInfo = tablesInfo.get(tableName);
but in private SortedMap<String, TableInfo> loadHdfsRegionInfos()
for (HbckInfo hbi: hbckInfos) {
if (hbi.getHdfsHRI() == null) {
// was an orphan
continue;
}
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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