What will happen when NameNode is down and a user submits a new job?

Since NameNode is the single point of failure in Hadoop, user job cannot execute. The job will fail when the NameNode is down. User will have to wait for NameNode to restart and come up, before running a job.

Read the full book at www.amazon.com
Posted in Hadoop, Hadoop Interview Questions

Leave a Reply

Your email address will not be published. Required fields are marked *