HDP 2.3.4 is a maintenance release of HDP 2.3.0. If you already have HDP 2.3.0 installed, upgrading your cluster to HDP 2.3.4 means:
Keeping the same configuration files you used for HDP 2.3.0
Keeping the same data and metadata in the same location you used for HDP 2.3.0
Installing any new components (added for the first time in HDP 2.3.4) side-by-side with existing components
To upgrade to HDP 2.3.4 for Windows, you can use the following steps:
Back up your databases, files, and metadata.
Save your cluster properties file.
Uninstall your previous version of HDP for Windows.
Install HDP 2.3.4 for windows
For complete upgrade instructions, see the Upgrading HDP on Windows.
