The data node and name node in HADOOP are
2020
The data node and name node in HADOOP are
Answer: A. Worker Node and Master Node respectively — Answer: DataNode = Worker node; NameNode = Master node. DataNode (Worker node): stores HDFS data blocks on the local filesystem, serves client read/write…
- A.
Worker Node and Master Node respectively
- B.
Master Node and Worker Node respectively
- C.
Both Worker Nodes
- D.
Both Master Nodes
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Correct answer: A
Answer: DataNode = Worker node; NameNode = Master node.
DataNode (Worker node): stores HDFS data blocks on the local filesystem, serves client read/write requests, and reports block status to the NameNode.
NameNode (Master node): maintains the filesystem namespace and metadata (such as file-to-block mapping), manages the cluster, and coordinates DataNodes.
Because of these distinct responsibilities, the correct mapping is that the DataNode is the worker and the NameNode is the master.
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