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