To recover a NN, you probably want to use the HA feature. If not, try writing your edits to a nfs volume in additional to the local fs.
There is no need to recover a DN. The NN compensates for a lost DN by using the other remaining replicas to create a new replica on another DN. Daryn On Dec 9, 2013, at 5:52 AM, oc tsdb <oc.t...@gmail.com> wrote: > Hi, > > I am trying to understand,how to recover a Name node or Data node failure in > case if those nodes are unable to come up due to unexpected issues. > > Is there a way to replace Name node with new name node without loosing data.I > mean new Name node should have all the data from original Name node. > Similarly for Data node. > > > Thanks > -OC > >
