Protobuf messages generated by the Externalizers from the org.wildfly.clustering.marshalling.spi module are not necessarily valid protobuf messages. This jira covers marshallers for the following classes:

• java.time*
• java.sql*
• java.util.Date/Calendar

Additionally, many java.time classes can be marshalled more efficiently using native protostream marshallers, which can optimize for loose precision and positive/future values.