Setting up Hadoop
A fully distributed HBase runs on top of HDFS. As a fully distributed HBase cluster installation, its master daemon (HMaster) typically runs on the same server as the master node of HDFS (NameNode), while its slave daemon (HRegionServer) runs on the same server as the slave node of HDFS, which is called DataNode.
Hadoop MapReduce is not required by HBase. MapReduce daemons do not need to be started. We will cover the setup of MapReduce in this recipe too, in case you like to run MapReduce on HBase. For a small Hadoop cluster, we usually have a master daemon of MapReduce (JobTracker) run on the NameNode server, and slave daemons of MapReduce (TaskTracker) run on the DataNode servers.
This recipe describes the setup of Hadoop. ...
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