© Deepak Vohra 2016

Deepak Vohra, Apache HBase Primer, 10.1007/978-1-4842-2424-3_8

8. Major Components of a Cluster

Deepak Vohra

(1)Apt 105, White Rock, British Columbia, Canada

An HBase cluster can consist of one or more nodes with its components distributed across the cluster. The major components of HBase cluster are as follows:

  1. Master

  2. RegionServers

  3. ZooKeeper

HBase runs in two modes: standalone and distributed. On a distributed cluster, the Master is typically on the same node as the HDFS NameNode, and the RegionServers are on the same node as a HDFS Datanode, with each RegionServer being collocated with a datanode. For a small cluster, a ZooKeeper may be collocated with the NameNode (not the datanode), but for a large cluster, the ZooKeeper should ...

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