Start Express Upgrade
To upgrade your IOP stack to HDP-2.6.4:
Steps
- Log in to Ambari. 
- Browse to Admin > Stack and Versions. 
- Click the Versions tab. - The registered and installed target HDP version displays. 
- Click Upgrade on the target version.  - Based on your current IOP version and the HDP target version, Ambari performs a set of prerequisite checks to determine whether the Express Upgrade meets all the necessary criteria to be started. 
- Select the Express Upgrade method.  - Proceed with Express Upgrade. the Skip All Service Check failures and Skip all Slave Component failures is optional. 
- Click Proceed. 
- In Confirmation, click Yes.  - After removing IOP select, you may see the following warnings, which acknowledge that IOP select is removed, when the Express Upgrade process starts.  
Next Steps

