Upgrading the MEP With the MapR Installer

If the cluster that you want to upgrade was installed using the MapR Installer, you can use the MapR Installer to upgrade the MapR Expansion Pack (MEP).

Before you begin, verify that all ecosystem components are prepared for an upgrade.
Warning: Service failures, job failures, or the loss of customized configuration files can occur if you do not perform the steps to prepare ecosystem components for an upgrade.
  1. Update the MapR Installer. For more information, see Updating the MapR Installer.
    This step ensures that the MapR Installer has access to the latest packages.
  2. Halt jobs and applications. Stop accepting new jobs and applications, and stop YARN applications.
    # yarn application -list
    # yarn application -kill <ApplicationId>

    You might also need specific commands to terminate custom applications. The MapR Installer waits for MRv1 jobs to complete before it begins the upgrade.

  3. Launch the MapR Installer URL ( https://<hostname/IPaddress>:9443).
  4. Select the Incremental Install option.
  5. Select the MEP Version to which you want to upgrade, and complete the upgrade through the MapR Installer.
  6. Once the upgrade through the MapR Installer is complete, perform the post-upgrade steps. See Finishing the MEP Upgrade.