May 2017
Intermediate to advanced
348 pages
7h 8m
English
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Chapter 6. Backup and Recovery
In this chapter, we will cover the following recipes:
- Initiating Namenode
saveNamespace - Using HDFS Image Viewer
- Fetching parameters which are in-effect
- Configuring HDFS and YARN logs
- Backing up and recovering Namenode
- Configuring Secondary Namenode
- Promoting Secondary Namenode to Primary
- Namenode recovery
- Namenode roll edits – Online mode
- Namenode roll edits – Offline mode
- Datanode recovery – Disk full
- Configuring NFS gateway to serve HDFS
- Recovering deleted files
Introduction
In this chapter, we will configure backup, restore processes, logs, and recovery using Secondary Namenode. Despite high availability, it is very important to back up data for adverse situations, irrespective of the notion of having a Secondary / backup node ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.