This is a tracking issue for ENTMQBR-2178, because it causes issues in EAP tests and we cannot track it otherwise.

Following artifacts do not contain Implementation-Version attribute in their MANIFEST.MF file in the jar archive:

./modules/system/layers/base/org/apache/activemq/artemis/protocol/hornetq/main/artemis-hornetq-protocol-2.6.3.redhat-00012.jar
./modules/system/layers/base/org/apache/activemq/artemis/main/artemis-hqclient-protocol-2.6.3.redhat-00012.jar

I can see that there is available Bundle-Version which can be utilized instead:

Bundle-Version: 2.6.3.redhat-00012

Although, in other artifacts we have Implementation-Version specified. Thus I believe that we should be consistent and have it specified also in these two packages.