Applying a Patch Using the MapR Installer

The MapR Installer automates much of the work involved in applying MapR patches.

For clusters with many nodes, using the MapR Installer can save you time and reduce the likelihood of errors when compared with other methods of applying patches. With the MapR Installer, you can apply a patch during a:
  • New installation of MapR software
  • Maintenance update
  • Version upgrade
Note:
  • Applying a patch using the MapR Installer is an offline update (not a rolling update).
  • You cannot apply a patch during an Incremental Install.
To apply a patch using the MapR Installer:
  1. Obtain the patch from MapR Support.
  2. Ensure that the cluster is ready for a patch update. For more information, see Verify Cluster Readiness for a Patch. Then return to this procedure.
  3. Start the MapR Installer. For more information, see MapR Installer.
  4. Select the Patch file option:
    If . . . Then . . .
    MapR software is not yet installed on the cluster (new installation) Click the Patch file option under the MapR Version field on the Version & Services page.
    MapR software is already installed (maintenance update or version upgrade) Do one of the following:
    • Click the Maintenance Update button. If you are performing a maintenance update, the Patch file option appears on the Maintenance Update page. For more information, see Performing a Maintenance Update.
    • Click the Version Upgrade button on the MapR Installer page. If you are performing a version upgrade, the Patch file option appears under the MapR version on the Upgrade Version & Services page.

    The installer prompts you to select the patch.

  5. Select the patch file, and click Choose. The installer verifies that the mapr-core version of the installed core (or the core version you are upgrading to) matches the core version of the patch file name. The installer also ensures that the patch file starts with mapr-patch, ends with rpm or deb, and does not include text such as client or nfs (to ensure that it is a core patch file). The installer does not ensure that the patch you are applying is a patch number higher than the one that is already installed (if a patch is already installed).
  6. Make other installer selections as needed. The patch is uploaded and will be installed in the background after the installer has applied any core packages.
    Note: The next time you run the MapR Installer on the cluster, the installer shows the updated patch version on the Incremental Install page or, if you enable patch installation, on the Version Upgrade or Maintenance Update page.