Backing up one of them is sufficient, but do check if both their contents are same and backup the more recent one (a mount may lag behind if it had a failure earlier, for ex.).
On Mon, May 19, 2014 at 3:39 PM, ch huang <justlo...@gmail.com> wrote: > hi,maillist: > i want to upgrade my cluster ,in doc,one of step is backup namenode > dfs.namenode.name.dir directory,i have 2 directories defined in > hdfs-site.xml,should i backup them all ,or just one of them? > > <property> > <name>dfs.namenode.name.dir</name> > <value>file:///data/namespace/1,file:///data/namespace/2</value> > </property> -- Harsh J
