Adding on to the comments You might need to update the etc-hosts with new values. If the host name changes as well, you may need to update the
fs.default.name and mapred.job.tracker with new values. On Thu, Apr 18, 2013 at 10:08 AM, Azuryy Yu <[email protected]> wrote: > Data nodes name or IP changed cannot cause your data loss. only kept > fsimage(under the namenode.data.dir) and all block data on the data nodes, > then everything can be recoveryed when your start the cluster. > > > On Thu, Apr 18, 2013 at 1:20 AM, Tom Brown <[email protected]> wrote: > >> We have a situation where we want to physically move our small (4 node) >> cluster from one data center to another. As part of this move, each node >> will receive both a new FQN and a new IP address. As I understand it, HDFS >> is somehow tied to the the FQN or IP address, and changing them causes data >> loss. >> >> Is there any supported method of moving a cluster this way? >> >> Thanks in advance! >> >> --Tom >> > >
