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https://issues.apache.org/jira/browse/HDFS-4781?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Tsz Wo (Nicholas), SZE resolved HDFS-4781.
------------------------------------------
Resolution: Fixed
Hadoop Flags: Reviewed
Thanks Jing and Suresh for reviewing the patch.
I have committed this.
> File listing of .snapshot under a non-existing dir throws NullPointer
> ---------------------------------------------------------------------
>
> Key: HDFS-4781
> URL: https://issues.apache.org/jira/browse/HDFS-4781
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: namenode
> Reporter: Ramya Sunil
> Assignee: Tsz Wo (Nicholas), SZE
> Fix For: Snapshot (HDFS-2802)
>
> Attachments: h4781_20130430.patch
>
>
> $ hadoop dfs -ls /invalidDir/.snapshot
> ls: java.io.IOException: java.lang.NullPointerException
> {noformat}
> INFO org.apache.hadoop.ipc.Server: IPC Server handler 2 on 8020, call
> getFileInfo(/invalidDir/.snapshot) from .* : error: java.io.IOException:
> java.lang.NullPointerException
> java.io.IOException: java.lang.NullPointerException
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirectory.getFileInfo4DotSnapshot(FSDirectory.java:1208)
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirectory.getFileInfo(FSDirectory.java:1189)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getFileInfo(FSNamesystem.java:2545)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.getFileInfo(NameNode.java:949)
> at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:587)
> at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1405)
> at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1401)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:396)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1195)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1399)
> {noformat}
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