How does Hadoop's HDFS High Availability feature handle the failure of a NameNode?
- Backup Node
- Checkpoint Node
- Secondary NameNode
- Standby NameNode
Hadoop's HDFS High Availability feature employs a Standby NameNode to handle the failure of the primary NameNode. The Standby NameNode maintains a synchronized copy of the metadata, ready to take over in case the primary NameNode fails, ensuring continuous availability.
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