For posterity, this was answered in a parallel thread at http://search-hadoop.com/m/IJvDL4rgOJ
On Thu, Oct 18, 2012 at 6:04 AM, Zheng, Kai <[email protected]> wrote: > Hi, > > > > When Kerberos authentication is used instead of the default “simple” method, > is a Linux user account needed to run a MapReduce job for a principal? Why? > > For example, for a Kerberos principal “[email protected]”, if he > needs to run a job, is the following step 1) & 2) a must? > > 1) Create a Linux user “john” (the first component of the principal > name); > > 2) The user logins as “john” into Linux shell; > > 3) kinit [email protected]; > > 4) run MapReduce job > > > > Thanks. -- Harsh J
