org.infinispan.commons.marshall.NotSerializableException: java.util.stream.Collectors$CollectorImpl --------------------------------------------------------------------------------------------------- Key: ISPN-7596 URL: https://issues.jboss.org/browse/ISPN-7596 Project: Infinispan Issue Type: Bug Components: Core Reporter: Gustavo Fernandes The legacy {{recordKnownGlobalKeyset}} operation Triggered by this snipped: {code:java} Set<byte[]> allKeys = cache.keySet(); Set<byte[]> copy = allKeys.stream().collect(Collectors.toSet()); {code}