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Posted to user@sqoop.apache.org by yogesh dhari <yo...@live.com> on 2012/06/14 11:41:34 UTC

Namenode Error: not running

Hi all,
 
I was working on hadoop-0.20.2 version, everything was going well,
then I have upgraded hadoop-0.21.0 version and installed it.
and tried to run all nodes, but it was failed.
 
i have formated the namenode, and also upgraded by this command
 
hdfs namenode -upgrade.
but still its not working.
 
then iam againg switichg to older version hadoop0.20.2
and trying to run all nodes and name nodes fails and shows this error.
even i tried this command to rollback.
 
hadoop namenode -rollback
 
 
ERROR org.apache.hadoop.hdfs.server.namenode.FSNamesystem: FSNamesystem initialization failed.
java.io.IOException: Unexpected version of the file system log file: -24. Current version = -18.

 
Please suggest
 
Greetings Yogesh