In a scenario where Hadoop NameNode crashes, what recovery procedure is typically followed?
- Manually Reallocate Data Blocks
- Reboot the Entire Cluster
- Restart NameNode Service
- Restore from Secondary NameNode
In the event of a NameNode crash, the typical recovery procedure involves restoring from the Secondary NameNode. The Secondary NameNode contains a checkpoint of the metadata, allowing for a faster recovery compared to restarting the entire cluster.
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