@Alfa6 Excuse me for the delayed update. I am catching up to speed here: In the meantime we would like to be sure that we will have not any regression about our software developed on CDP 7.1.1. I hope you did get a chance to review the Component Versions page on the CDP 7.1.1 vs. 7.1.9. If not already, Please do: CDP 7.1.1 Components Version: https://docs.cloudera.com/runtime/7.1.1/release-notes/topics/rt-runtime-component-versions.html CDP 7.1.9 Components Version: https://docs.cloudera.com/cdp-private-cloud-base/7.1.9/runtime-release-notes/topics/rt-pvc-runtime-component-versions.html Additionally, Since you are concerned about the Backward compatibility, You may want to read the deprecation notices for 7.1.9 too: https://docs.cloudera.com/cdp-private-cloud-base/7.1.9/runtime-release-notes/topics/rt-pvc-deprecated.html Let us know how you plan your CDP upgrade. We are here to help for the hassle-upgrade experience on your CDP! Cheers V ... View more