Backwards compatibility for marshalling --------------------------------------- Key: JGRP-140 URL: http://jira.jboss.com/jira/browse/JGRP-140 Project: JGroups Issue Type: Feature Request Affects Versions: 2.2.8, 2.2.9 Reporter: Bela Ban Assigned To: Bela Ban Fix For: 2.x New versions of JGroups are backwards-compatible to previous versions. Solution: - Maintain a hashmap of version numbers (keys) with Marshallers (values), e.g. 2.2.7: Marshaller-2.2.7 2.2.8: Marshaller-2.2.8 2.2.9: Marshaller-2.2.9 We send with each msg a version ID (this is done already). The version ID is the lookup key for unmarshalling a message, so we fetch the right Marsaller