Before you begin the upgrade process, it is important to understand your upgrade paths.
HDF upgrade paths
- HDF 3.4.x
- HDF 3.3.x
- HDF 3.2.x
If you are running an earlier HDF version, upgrade to at least HDF 3.2.x, and then proceed to the HDF 18.104.22.168 upgrade.
HDP and Ambari versions
- Supported HDP versions – 3.0.x, 3.1.0
- Supported Ambari versions – 2.7.x
We strongly discourage downgrading from Kafka 2.1.0 to earlier versions. Though Ambari allows you to downgrade to earlier versions of Kafka after you upgrade to 2.1.0, consider the following before you do so: