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APPLIES TO:
Azure Cosmos DB for PostgreSQL (powered by the Citus database
extension to PostgreSQL)
The Azure Cosmos DB for PostgreSQL managed service can handle upgrades of both the PostgreSQL server, and the Citus extension. All clusters are created with the latest Citus version available for the major PostgreSQL version you select during cluster provisioning. When you select a PostgreSQL version such as PostgreSQL 15 for in-place cluster upgrade, the latest Citus version supported for selected PostgreSQL version is going to be installed.
If you need to upgrade the Citus version only, you can do so by using an in-place upgrade. For instance, you might want to upgrade Citus 11.0 to Citus 11.3 on your PostgreSQL 14 cluster without upgrading Postgres version.
Upgrades require some downtime in the database cluster. The exact time depends on the source and destination versions of the upgrade. To prepare for the production cluster upgrade, we recommend testing the upgrade, and measure downtime during the test.
Also, upgrading a major version of Citus can introduce changes in behavior. It's best to familiarize yourself with new product features and changes to avoid surprises.
Noteworthy Citus 12 changes:
by_shard_count
to by_disk_size
.Noteworthy Citus 11 changes:
Events
Mar 17, 9 PM - Mar 21, 10 AM
Join the meetup series to build scalable AI solutions based on real-world use cases with fellow developers and experts.
Register now