Setting up Hive

In this section, we will walk through the act of downloading, installing, and configuring Hive.

Prerequisites

Unlike Hadoop, there are no Hive masters, slaves, or nodes. Hive runs as a client application that processes HiveQL queries, converts them into MapReduce jobs, and submits these to a Hadoop cluster.

Although there is a mode suitable for small jobs and development usage, the usual situation is that Hive will require an existing functioning Hadoop cluster.

Just as other Hadoop clients don't need to be executed on the actual cluster nodes, Hive can be executed on any host where the following are true:

  • Hadoop is installed on the host (even if no processes are running)
  • The HADOOP_HOME environment variable is set and points to the ...

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