Thanks Harsh for your answers. I asked that namenode layout version id doesn't conflict.
-Viswa.J On Aug 23, 2013 10:12 PM, "Harsh J" <ha...@cloudera.com> wrote: > Hi, > > On Fri, Aug 23, 2013 at 10:05 PM, Viswanathan J > <jayamviswanat...@gmail.com> wrote: > > Hi, > > > > We are planning to upgrade our production hdfs cluster from 1.0.4 to > 1.2.1 > > > > So if I directly upgrade the cluster, it won't affect the edits, fsimage > and > > checkpoints? > > Yes, an upgrade won't affect those. > > > Also after upgrade is it will read the blocks, files from the data nodes > > properly? > > Yes. > > > Is the version id conflict occurs with NN? > > Not sure what you mean, but there shouldn't be a problem as long as > all service nodes and client nodes are upgraded to the same version. > > > Do I need lose the data after upgrade? > > You won't lose data after an upgrade. > > -- > Harsh J >
