Hi Jim, we have not tested rolling upgrade. I don’t foresee this being an issue, but we’ll try it out and report back.
Jonathan ________________________________ From: Jim Brennan <[email protected]> Sent: Tuesday, April 2, 2019 9:17 AM To: Jonathan Hung Cc: [email protected]; [email protected] Subject: Re: [DISCUSS] Merging YARN-8200 to branch-3.0 and branch-2 Thanks for working on this! One concern for us is support for a rolling upgrade. If we are running a cluster based on branch-2.8, will we be able to do a rolling upgrade (no cluster down-time) to a branch containing these changes? Have you tested rolling upgrades? Thanks. Jim On Fri, Mar 29, 2019 at 2:14 PM Jonathan Hung <[email protected]<mailto:[email protected]>> wrote: Hello devs, Starting a discuss thread to merge resource types/native GPU scheduling support to branch-3.0 and branch-2. The resource types work was done in trunk~branch-3.0 and GPU support done in trunk~branch-3.1, so the proposal is to merge GPU support into branch-3.0 and both resource types/GPU support to branch-2. Internally we've been running resource types/GPU support off a fork of branch-2.9.0 in a > 300 node GPU cluster for a few months which has worked well. Also for completeness we verified that everything going into branch-2 also exists in branch-3.0. The specific list of patches to merge is in feature branch YARN-8200.branch3 (for branch-3.0) and feature branch YARN-8200 (for branch-2). Full patches containing the YARN-8200.branch3 -> branch-3.0 diff and YARN-8200 -> branch-2 diff have been posted to YARN-8200 jira. If there's no issues from the community I'll start a merge vote next week. Thanks. Jonathan Hung
