---------- Forwarded message ----------
From: mike anderson <[email protected]>
Date: Thu, Feb 10, 2011 at 11:57 AM
Subject: multiple namenode directories
To: [email protected]
This should be a straightforward question, but better safe than sorry.
I wanted to add a second name node directory (on an NFS as a backup), so now
my hdfs-site.xml contains:
<property>
<name>dfs.name.dir</name>
<value>/mnt/hadoop/name</value>
</property>
<property>
<name>dfs.name.dir</name>
<value>/public/hadoop/name</value>
</property>
When I go to start DFS i'm getting the exception:
org.apache.hadoop.hdfs.server.common.InconsistentFSStateException: Directory
/public/hadoop/name is in an inconsistent state: storage directory does not
exist or is not accessible.
After googling a bit, it seems like I want to do "bin/hadoop namenode
-format"
Is this right? As long as I shut down DFS before issuing the command I
shouldn't lose any data?
Thanks in advance,
Mike
