hello friends, we are going to start studying upgrading our clusters to pinot 0.11.0 I was wondering if there’s any gotchas that you all had regarding that upgrade and if following this https://docs.pinot.apache.org/operators/operating-pinot/upgrading-pinot-cluster still is the way to go and if anything change from going from 0.10.0 to 0.11.0 in terms of how to roll the upgrade, we did 0.9.0 to 0.10.0 following the doc and everything went alright but just wanna make sure there are no new unexpected things ahead of us

There was a Helix version upgrade, and I recall a discussion on recommended order for rollout. Can you check release notes on that? cc @Xiang Fu @Subbu Subramaniam

@Luis Fernandez As long as you follow the upgrade order mentioned in the docs, you should be good. If something does not work, please downgrade in the reverse order. If you have an installatin where you had separateed helix controller from pinot controler, then be sure to upgtade helix controller first before. upgradnig pinot controller, broker, server, minion in that order. Lastly, we highly recommend that you test some of your tables with the compatibility test suite framework that we have provided. You can do this testing in your site.

we do not have a separate helix controller atm, and i know we introduce some new intermediary servers with the V2 engine, are these things that we get if we update the helm chart?

V2 engine has not been tested in the upgrade suite. @Rong R or @Sidd can either of you help out here?