Hi, I installed version 1.0.3 of Hadoop and I'm interested in running the BackupNode. The user guide explains the BackupNode and how to configure / start it: http://hadoop.apache.org/docs/r1.0.3/hdfs_user_guide.html#Backup+Node I'm having difficulty starting the BackupNode and I assume that either the documentation is out-of-synch, or the BackupNode is not really supported in 1.0.3. I say this because:
1. The documented command to start the BackupNode doesn't exist: bin/hdfs namenode -checkpoint (the "hdfs" script doesn't exist at all) 2. I also tried the "bin/hadoop namenode" command, but it only supports these arguments: Usage: java NameNode [-format] | [-upgrade] | [-rollback] | [-finalize] | [-importCheckpoint] Am I doing something wrong, or is the BackupNode not supported in 1.0.3 (and therefore the documentation incorrect)? Regards, Jaco
