Yes your data is safe.
On Sun, Jan 6, 2013 at 6:41 PM, Jianhui Zhang <[EMAIL PROTECTED]>wrote:
> Hadoop version: hadoop-0.20.205.0
> My NN machine has 2 IP addresses and 2 hostnames assigned to them
> respectively. I have configured "fs.default.name" using one of the
> hostnames and used the cluster for a while.
> Now, I may have to move the "fs.default.name" to the other IP/hostname of
> the same machine. If no other configurations change (such as the
> directories), can I simply change "fs.default.name" to the new hostname,
> restart the NN and expect the same filesystem is intact?