Warning messages such as this should not appear when the cache loader is read only, i.e. ClusterCacheLoader:
2012-03-01 22:27:34,523 | ISPN000149: Fetch persistent state and purge on startup are both disabled, cache may contain stale entries on startup

The original warning message came from ConfigurationValidatingVisitor where there was, a check to see if the cache loader was really a cache store (i.e. loaderConfig instanceof CacheStoreConfig). This is not present in LoaderConfigurationBuilder for the new configuration style.

So, add it to LoaderConfigurationBuilder and mark ConfigurationValidatingVisitor as deprecated.