Github user michaelandrepearce commented on the issue:
https://github.com/apache/activemq-artemis/pull/2488
@franz1981 alot of comments where why integer vs byte, whilst legacy
ActiveMQ only supported 0-127 in open wire, many other brokers support integer
for this feature, e.g. QPID for AMQP supports -2^31 to 2^31-1 like wise
rabbitmq.
This is set on the consumer (its not per message) so size isn't an issue it
makes sense to support the int and not constrain our selves un-neededly, making
people migrating AMQP easier.
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