Wednesday 5 April 2017

Hadoop cluster

Hadoop cluster


Node
  • Any computer hardware which is working.
Rack
  • A group of interconnected nodes.
Switch
  • By using switch, communication is happening between the rack nodes. 
Cluster
  • A group of interconnected Racks. 
  • Hadoop cluster contains the Group of Racks. 
  • Name node, Job Tracker, Secondary name node, Data nodes, task tracker & client all these presents in Rack. 
  • Name node is one per cluster. 
  • Data node and task tracker can exists many in cluster to store actual data and process the data.

Thanks for your time.
-Nireekshan