What are the different types of usage modes of operations in Hadoop?

1.	What are the different types of usage modes of operations in Hadoop?
Answer» Hadoop operations can be used in three different modes. These are listed below: Standalone mode: NameNode, DataNode, SECONDARY NAME node, Job Tracker, and Task Tracker will not run in Standalone mode. It is also called Local mode as Hadoop is made to run on this mode by default. Pseudo distributed mode: A single node is used in this mode also and the main thing in this type of mode is that all the tasks and processes in a cluster run independently to each other. Fully distributed mode: This acts as the most IMPORTANT mode as here MULTIPLE nodes are used. Few are used for Resource Manager and NameNode and REST of the nodes are used for the Node manager and DataNode.

Answer»

Hadoop operations can be used in three different modes. These are listed below:

Standalone mode: NameNode, DataNode, SECONDARY NAME node, Job Tracker, and Task Tracker will not run in Standalone mode. It is also called Local mode as Hadoop is made to run on this mode by default.
Pseudo distributed mode: A single node is used in this mode also and the main thing in this type of mode is that all the tasks and processes in a cluster run independently to each other.
Fully distributed mode: This acts as the most IMPORTANT mode as here MULTIPLE nodes are used. Few are used for Resource Manager and NameNode and REST of the nodes are used for the Node manager and DataNode.

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