May 2017
Beginner to intermediate
596 pages
15h 2m
English
Content preview from Data Lake for Enterprises
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
Start your free trial
The NameNode server
This component has the responsibility of scheduling and tracking jobs spread across the cluster. Until Hadoop 1, it was a single point of failure, but with Hadoop 2, this responsibility was delegated to YARN, which creates multiple job trackers across the cluster and ensures failover.