In MERGE3, as a response to a VIEW_REQ, a VIEW_RSP contains the entire view (not a delta view), and because this is returned in the header, we might run into the same issue as in https://issues.jboss.org/browse/JGRP-1710.
SOLUTION:
Move the view carried with a VIEW_RSP into the message body and add FRAG2 over the transport to fragment this message.