In monitoring Hadoop clusters, ____ plays a critical role in ensuring data replication and consistency.
- Block Scanner
- Checkpoint Node
- HDFS Balancer
- Secondary NameNode
The HDFS Balancer is a crucial component in monitoring Hadoop clusters. It ensures data replication and consistency by redistributing data blocks across the nodes to maintain a balanced storage load. This helps prevent data skew and ensures optimal performance in the cluster.
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