MapR 5.1 is at End of Life (EOL) and no longer supported. Please see the latest documentation. This documentation is not being updated.

5.1 Installation
This section provides information for installing with or without (manual) the MapRInstaller, installing patches, upgrading, and migrating.
- Get Started: Install MapR
  The MapR Installer makes the installation of a MapR cluster easy. It installs MapR software after it takes you through the process of selecting services and configuring the cluster.
- Installation Guide
  - Planning the Cluster
  - Preparing Each Node
  - Installing MapR Software
    - Step 1: Prepare Packages and Repositories
    - Step 2: Install the MapR Package Key
    - Step 3: Install MapR Service Packages
    - Step 4: Verify Installation Success
    - Step 5: Set Environment Variables
    - Step 6: Configure Nodes
    - Step 7: Bring Up the Cluster
    - Configuration Changes During Installation
    - MapR Repositories and Packages
      This topic describes the online repositories and archives for MapR software.
  - Next Steps After Installation
  - Setting Up the Client
- Upgrade Guide
- Applying a Patch
  MapR patches are version-specific and cumulative. Each patch contains the code fixes that were included in the previous patch for that MapR version.
- Migration Guide

Step 5: Set Environment Variables

Set environment variables for MapR. The /opt/mapr/conf/env.sh script looks for the directory where Java is installed and sets JAVA_HOME automatically. However, if JAVA_HOME is not set by running the env.sh script, edit /opt/mapr/conf/env.sh to set JAVA_HOME. This variable must be set before starting ZooKeeper or Warden.