Testing with 60,000+ services, found that cancelling large numbers of services takes significant time. Found another linear lookup that can be optimized with a map.
Here is a commit that fixes the problem in local testing: https://github.com/artnaseef/ignite/commit/4ca87f7f6e7aae193faf1404736e0b4ee7168752 The difference, on my local system, with and without the patch: CANCEL 60,000 *WITHOUT PATCH* = 67s 358ms CANCEL 60,000 *PATCHED* = 1s 323ms Note that, with the IGNITE-17274 fix, startup of the same 60,000 services only takes ~ 9s. Appreciate any feedback, and I hope we can push this fix forward. I can create a new Jira ticket and pull request. Art
