Why didn't Amazon Redshift perform any upgrades during the maintenance window?
Last updated: 2022-09-20
I scheduled maintenance for my Amazon Redshift cluster. However, the maintenance did not trigger. Why did this happen?
Your Amazon Redshift cluster might not perform an upgrade during the maintenance window for the following reasons:
- There are no maintenance tasks to perform: Check to see if there are any scheduled maintenance tasks. If there are none during the scheduled maintenance window, then your cluster operates normally until the next scheduled maintenance window.
- Your AWS Region has not yet implemented the latest version of Amazon Redshift: In some cases, your cluster might not be upgraded to the newest version of Amazon Redshift during a maintenance window. This depends on your AWS Region and the timing of the patch release. If your AWS Region hasn't implemented the latest version of Amazon Redshift, then your cluster isn't updated.
- Amazon Redshift is undergoing a hardware update: Maintenance periods are overridden when a mandatory hardware replacement is scheduled on your Amazon Redshift cluster. If a hardware replacement is required, you receive an event notification through the AWS Management Console and SNS subscription as a "Pending" item.
For more information, see Overview of managing clusters in Amazon Redshift.