Up to 9.4.x, ClusterCacheStatsImpl uses the distributed executor service to collect statistics from all the members of the cache. However, DES will fail with a SuspectException if one of the cache members is no longer in the cluster view, which is very common (a crashed node is always removed from the cluster view first and from the cache topology later):

23:40:57,029 ERROR [org.infinispan.stats.impl.ClusterCacheStatsImpl] (pool-1-thread-1) Could not execute cluster wide cache stats operation : java.util.concurrent.ExecutionException: 
org.infinispan.remoting.transport.jgroups.SuspectException: ISPN000400: Node rhdg73-server-11-9pl9h was suspected

In 10.0.x the distributed executor was removed and stats use the cluster executor, which only works with the cluster view.