In one of our environments where we have 15 nodes in cloud we got to the point where following issue occurs on one of the nodes - node22 (Cache zones encountered exception whilst trying to resolve conflicts on merge: java.util.concurrent.CompletionException: org.infinispan.commons.CacheException).

We reproduced it while having 15 nodes in cloud, and then unplugging and plugging one node - node11 back.

I'm attaching infinispan logs (WARN level set) from the failed controllers and our cluster config. 15nodes-merge-issue.zip