Sorry, may I resend the message with a subject, just forgot it. 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]<mailto:[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]<mailto:[email protected]>; 4) run MapReduce job Thanks.
