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Posted to common-user@hadoop.apache.org by Boyu Zhang <bz...@cs.utsa.edu> on 2009/06/24 21:54:29 UTC

DataNode Cannot Start Incompatible namespaceIDs

Hi everyone,

 

I am new to Hadoop. When I run start-all.sh in pseudo distributed model, I
got this 

 

ERROE: org.apache.hadoop.dfs.DataNode: java.io.IOException: Inconpatible
namespaceIDs in /tmp/hadoop-zhang/dfs/data: namenode
namespceID=13510389749;datanode namespaceID = 222833940.

 

So I cannot start the datanode. I am sure it is something stupid I did or
did not do, I just can't figure it out. I really appreciate it if somebody
could help me out. Thanks a lot.

 

Sincerely,

 

Boyu Zhang

RE: DataNode Cannot Start Incompatible namespaceIDs

Posted by Boyu Zhang <bo...@gmail.com>.

Hi everyone,

Me again. The problem has been solved, I clean the stuff in /tmp and
everything works. Thanks.

Boyu

-----Original Message-----
From: Boyu Zhang [mailto:bzhang@cs.utsa.edu] 
Sent: Wednesday, June 24, 2009 3:54 PM
To: core-user@hadoop.apache.org
Subject: DataNode Cannot Start Incompatible namespaceIDs

Hi everyone,

 

I am new to Hadoop. When I run start-all.sh in pseudo distributed model, I
got this 

 

ERROE: org.apache.hadoop.dfs.DataNode: java.io.IOException: Inconpatible
namespaceIDs in /tmp/hadoop-zhang/dfs/data: namenode
namespceID=13510389749;datanode namespaceID = 222833940.

 

So I cannot start the datanode. I am sure it is something stupid I did or
did not do, I just can't figure it out. I really appreciate it if somebody
could help me out. Thanks a lot.

 

Sincerely,

 

Boyu Zhang