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MapReduce >> mail # user >> HDFS BackupNode support in 1.0.3

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Re: HDFS BackupNode support in 1.0.3

There is no BackupNode in 1.x. The docs were by mistake, see

Also, we're removing BackupNode and CheckpointNode in future (trunk
for now) in favor of HA NameNodes and the SecondaryNameNode.

On Thu, Oct 25, 2012 at 8:13 PM, Jaco Joubert <[EMAIL PROTECTED]> wrote:
> 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:
> The documented command to start the BackupNode doesn't exist:
> bin/hdfs namenode -checkpoint
> (the "hdfs" script doesn't exist at all)
> 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

Harsh J