Hi Senthil, Namenode and datanodes are supposed to be started by the same account. Jobtracker and its tasktrackers can be started by another account. Then, you can submit job with a third account (if all permission setting are correct). See http://issues.apache.org/jira/browse/HADOOP-3182 for more discussion.
Nicholas ----- Original Message ---- From: "Natarajan, Senthil" <[EMAIL PROTECTED]> To: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> Sent: Thursday, May 8, 2008 1:15:33 PM Subject: Hadoop Job Submission Hi, I have some rudimentary question. In order to use Hadoop (both HDFS and MapReduce) does each user whoever wants to run the job needs to start their jobtracker and datanode and submit the job. Or is it possible to start the jobtracker and datanode using the user "hadoop" and other users can able to submit the jobs. If this is possible what configuration changes needs to be done so that other users won't get permission error. Thanks, Senthil
