I believe principal should be the same, something like "hdfs/HOST@YOUR_REALM", as all these processes run as "hdfs" user.
On 23 Jul 2014, at 12:42, Ramgopal Nali <[email protected]> wrote: > Hi, > > I am using hadoop-2.4.1 > > I have configured different principals for the server processes and tried > starting.(NN and JN principals are same,DN different) > > Server processes startup have failed. > > But if i am using the same principals for the process then cluster startup is > success. > > Is it mandatory to have the same principals for all the processes > (NN,JN,DN,RM,NM...)? > > > regards, > Ramgopal
