It looks like rpms/hadoop was recently auto-retired because of a broken non-essential dependency (netcat/nc6) was orphaned. I have taken nc6, but cannot unretire hadoop in pkgdb. When I attempt to do so, it results in an error.

This package is a dependency of a few other packages which are now currently broken, including accumulo, which I maintain.

For the discussion, please see [https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org/thread/Z3H5WHJ645G66WMI7C6FHX7W2MMU7WV2/#Z3H5WHJ645G66WMI7C6FHX7W2MMU7WV2 this mailing list thread].