Pre-Upgrade Steps for Storm

First, you stop the currently running topology so you can submit a new topology under the same name after the upgrade compeltes. Next, you back up configuration files if you made configuration changes that you want to carry over to the next version.

  1. Stop the currently running topology.
    storm kill <topology-name>
  2. Copy the files in /opt/mapr/storm/storm-<version>/conf/ to a location outside the MapR installation.
    After upgrading, you can reapply changes to the updated Storm installation using the backup.