What is an edge node in Hadoop?

There are three types of nodes exist in Hadoop.

a.   Master nodes

b.   Worker nodes

c.    Edge nodes

 

 

Master nodes

Master nodes host core Hadoop services. For example, name node, secondary name node and YARN resource manager run on master nodes.

 

Worker nodes

Worker nodes are responsible to store, process the data. For example, data nodes in the Hadoop cluster will come under this category.

 

Edge nodes

In a typical Hadoop environment, name node and worker nodes are not directly accessible. In this scenario, edge nodes acts as an interface between master, worker nodes and the client.

Note

Edge nodes might be in the cluster or might not be part of a Hadoop cluster.

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