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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-1915) Error in create file while using FUSE
Date Wed, 11 May 2011 01:14:52 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1915?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13031501#comment-13031501
] 

Allen Wittenauer commented on HDFS-1915:
----------------------------------------

This doesn't really map well to an Apache release.  Someone from Cloudera will need to parse
this to make this bug viable.

> Error in create file while using FUSE 
> --------------------------------------
>
>                 Key: HDFS-1915
>                 URL: https://issues.apache.org/jira/browse/HDFS-1915
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: name-node
>    Affects Versions: 0.20.2
>         Environment: Ubuntu 10.04 LTS on EC2
>            Reporter: Sampath K
>
> Environment:  CloudEra CDH3, EC2 cluster with 2 data nodes and 1 name node(Using ubuntu
10.04 LTS large instances), mounted hdfs in OS using fuse-dfs. 
> Able to do HDFS fs -put but when I try to use a FTP client(ftp PUT) to do the same, I
get the following error. I am using vsFTPd on the server.
> Changed the mounted folder permissions to a+w to rule out any WRITE permission issues.
I was able to do a FTP GET on the same mounted 
> volume.    
> Please advise
> FTPd Log
> ==============
> Tue May 10 23:45:00 2011 [pid 2] CONNECT: Client "127.0.0.1"
> Tue May 10 23:45:09 2011 [pid 1] [ftpuser] OK LOGIN: Client "127.0.0.1"
> Tue May 10 23:48:41 2011 [pid 3] [ftpuser] OK DOWNLOAD: Client "127.0.0.1", "/hfsmnt/upload/counter.txt",
10 bytes, 0.42Kbyte/sec
> Tue May 10 23:49:24 2011 [pid 3] [ftpuser] FAIL UPLOAD: Client "127.0.0.1", "/hfsmnt/upload/counter1.txt",
0.00Kbyte/sec
> Error in Namenode Log (I did a ftp GET on counter.txt and PUT with counter1.txt) 
> ===============================
> 2011-05-11 01:03:02,822 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem.audit:
ugi=ftpuser	ip=/10.32.77.36	cmd=listStatus	src=/upload	dst=null	perm=null
> 2011-05-11 01:03:02,825 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem.audit:
ugi=root	ip=/10.32.77.36	cmd=listStatus	src=/upload	dst=null	perm=null
> 2011-05-11 01:03:20,275 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem.audit:
ugi=root	ip=/10.32.77.36	cmd=listStatus	src=/upload	dst=null	perm=null
> 2011-05-11 01:03:20,290 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem.audit:
ugi=ftpuser	ip=/10.32.77.36	cmd=open	src=/upload/counter.txt	dst=null	perm=null
> 2011-05-11 01:03:31,115 WARN org.apache.hadoop.hdfs.StateChange: DIR* NameSystem.startFile:
failed to append to non-existent file /upload/counter1.txt on client 10.32.77.36
> 2011-05-11 01:03:31,115 INFO org.apache.hadoop.ipc.Server: IPC Server handler 7 on 9000,
call append(/upload/counter1.txt, DFSClient_1590956638) from 10.32.77.36:56454: error: java.io.FileNotFoundException:
failed to append to non-existent file /upload/counter1.txt on client 10.32.77.36
> java.io.FileNotFoundException: failed to append to non-existent file /upload/counter1.txt
on client 10.32.77.36
> 	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.startFileInternal(FSNamesystem.java:1166)
> 	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.appendFile(FSNamesystem.java:1336)
> 	at org.apache.hadoop.hdfs.server.namenode.NameNode.append(NameNode.java:596)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 	at java.lang.reflect.Method.invoke(Method.java:597)
> 	at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:557)
> 	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1415)
> 	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1411)
> 	at java.security.AccessController.doPrivileged(Native Method)
> 	at javax.security.auth.Subject.doAs(Subject.java:396)
> 	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1115)
> 	at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1409)
> No activity shows up in datanode logs.

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