Hadoop Cluster

A Hadoop Cluster is a MapReduce computing cluster that is based on Hadoop software.

• Context:
  • It can run Hadoop Jobs.
  • …
• Counter-Example(s):
  • a Spark Cluster.
• See: HDFS, Hadoop Master Node.

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References

2012

• http://en.wikipedia.org/wiki/Apache_Hadoop#Architecture
  • … A small Hadoop cluster will include a single master and multiple worker nodes. The master node consists of a JobTracker, TaskTracker, NameNode, and DataNode. A slave or worker node acts as both a DataNode and TaskTracker, though it is possible to have data-only worker nodes, and compute-only worker nodes; these are normally only used in non-standard applications.

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