Hi Everyone,
I'm using Hadoop 1.0.4 and only define 1 location for name node files, like
this:
<property>
<name>dfs.name.dir</name>
<value>/home/hadoop/hadoop-data/namenode</value>
</property>
Now I want to protect my name node files by changing the configuration to:
<property>
<name>dfs.name.dir</name>
<value>/home/hadoop/hadoop-data/namenode,/backup/hadoop/hadoop-data/namenode</value>
</property>
Where /backup is another mount point. This /backup can be another disk or from
another NFS server.
My question are:
1. Is my procedure correct: do stop-dfs.sh then modify conf, and last
start-dfs.sh?
2. If answer to no 1 is no, then could you provide the correct procedure?
3. Would the new name node files will auto copy the original name node
files?
Best regards,
Henry
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