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Posted to common-dev@hadoop.apache.org by "Raghu Angadi (JIRA)" <ji...@apache.org> on 2008/03/28 18:30:24 UTC
[jira] Commented: (HADOOP-3108) NPE in
FSDirectory.unprotectedSetPermission
[ https://issues.apache.org/jira/browse/HADOOP-3108?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12583102#action_12583102 ]
Raghu Angadi commented on HADOOP-3108:
--------------------------------------
> I should say in general that handling of RemoteExceptions e.g. in connection
> with FileNotFoundException is terrible. I will file a separate jira.
This has been a long standing issue. Doug commented many times on this. If I remember correctly, his latest suggestion was something like to unwrap the exception as long as the inner exception class exists on the client. New jira will be good.
> NPE in FSDirectory.unprotectedSetPermission
> -------------------------------------------
>
> Key: HADOOP-3108
> URL: https://issues.apache.org/jira/browse/HADOOP-3108
> Project: Hadoop Core
> Issue Type: Bug
> Components: dfs
> Affects Versions: 0.16.1
> Reporter: Koji Noguchi
> Assignee: Konstantin Shvachko
> Priority: Blocker
> Fix For: 0.16.2
>
> Attachments: 3108_20080327.patch, getNodeNPE.patch
>
>
> Not sure if this is fixed in later release, but I'm seeing many NPE in the namenode log.
> Permission is disabled on this cluster.
> {noformat}
> 2008-03-27 03:22:39,984 INFO org.apache.hadoop.ipc.Server: IPC Server handler 18 on 8020,
> call setPermission(/user/knoguchi/file0, rwxr-xr-x) from 99.9.99.9:55555:
> error: java.io.IOException: java.lang.NullPointerException
> java.io.IOException: java.lang.NullPointerException
> at org.apache.hadoop.dfs.FSDirectory.unprotectedSetPermission(FSDirectory.java:411)
> at org.apache.hadoop.dfs.FSDirectory.setPermission(FSDirectory.java:405)
> at org.apache.hadoop.dfs.FSNamesystem.setPermission(FSNamesystem.java:716)
> at org.apache.hadoop.dfs.NameNode.setPermission(NameNode.java:297)
> at sun.reflect.GeneratedMethodAccessor21.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$Server.call(RPC.java:409)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:899)
> {noformat}
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