Infinispan versions 4.0 and 4.1 where having the schema to validate the XML of configuration files in the core jar, in a directory "schema".
This directory is missing in the latest snapshots of versions of 4.2

WARN [InfinispanConfiguration] (main) Infinispan schema could not be resolved locally nor fetched from URL. Local path=schema/infinispan-config-4.2.xsd, schemaPath=schema/infinispan-config-4.2.xsd,schemaURL=http://www.jboss.org/infinispan/infinispan-config-4.2.xsd