Manoj Govindassamy created HDFS-12985:
-----------------------------------------
Summary: NameNode crashes during restart after an OpenForWrite
file present in the Snapshot got deleted
Key: HDFS-12985
URL: https://issues.apache.org/jira/browse/HDFS-12985
Project: Hadoop HDFS
Issue Type: Bug
Components: hdfs
Affects Versions: 2.8.0
Reporter: Manoj Govindassamy
Assignee: Manoj Govindassamy
NameNode crashes repeatedly with NPE at the startup when trying to find the
total number of under construction blocks. This crash happens after an open
file, which was also part of a snapshot gets deleted along with the snapshot.
{noformat}
java.lang.NullPointerException
at
org.apache.hadoop.hdfs.server.namenode.LeaseManager.getNumUnderConstructionBlocks(LeaseManager.java:144)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getCompleteBlocksTotal(FSNamesystem.java:4456)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.startCommonServices(FSNamesystem.java:1158)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.startCommonServices(NameNode.java:825)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:751)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:968)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:947)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1674)
at
org.apache.hadoop.hdfs.MiniDFSCluster.restartNameNode(MiniDFSCluster.java:2110)
at
org.apache.hadoop.hdfs.MiniDFSCluster.restartNameNode(MiniDFSCluster.java:2075)
at
org.apache.hadoop.hdfs.server.namenode.snapshot.TestOpenFilesWithSnapshot.testSnapshotsForOpenFilesAndDeletion3(TestOpenFilesWithSnapshot.java:747)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at
org.junit.internal.runners.statements.FailOnTimeout$StatementThread.run(FailOnTimeout.java:74)
{noformat}
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