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? > > Thanks, > James >
