Common Steps to Perform Before the Upgrade

• Ensure that you have successfully run service checks for all the services and uninstalled any existing mpacks before proceeding with the upgrade. If you face any service check issue kindly look at troubleshooting steps mentioned at the end of the document.
• (For reference before the upgrade, check Ambari warnings.) The following warning may appear if you have mpacks installed and linked to your stack (e.g., SPARK3). Ensure that they are properly addressed or removed before proceeding with the upgrade, and only proceed once you are certain that the warnings are unnecessary or will not impact the upgrade.

Sample Exception

The following components are reporting unexpected versions: 
 manish1.odp.ce
 SPARK3_CLIENT: UNKNOWN
 SPARK3_JOBHISTORYSERVER: UNKNOWN
 NIFI_MASTER: UNKNOWN
 manish2.odp.ce
 SPARK3_CLIENT: UNKNOWN
 manish3.odp.ce
 SPARK3_THRIFTSERVER: UNKNOWN
 SPARK3_CLIENT: UNKNOWN
 LIVY3_SERVER: UNKNOWN