[HDFS-4781] File listing of .snapshot under a non-existing dir throws NullPointer

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: Snapshot (HDFS-2802)
• Component/s: namenode
• Hadoop Flags: Reviewed
• Assignee: Tsz-wo Sze
• Reporter: Ramya Sunil
• Created: 30/Apr/13 20:58
• Updated: 02/May/13 13:09
• Resolved: 01/May/13 18:33

Description

$ hadoop dfs -ls /invalidDir/.snapshot
ls: java.io.IOException: java.lang.NullPointerException

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)