See this JIRA/comment for background:
basically the issue is that OSGi metadata is included in the legacy jar (zookeeper-<version>.jar) but not in the binary only
jar (zookeeper-<version>-bin.jar) which is eventually deployed to the maven repo.
|Status||Patch Available [ 10002 ]||Open [ 1 ]|
|Status||Patch Available [ 10002 ]||Resolved [ 5 ]|
|Resolution||Fixed [ 1 ]|
|Status||Resolved [ 5 ]||Closed [ 6 ]|