7e1fddb217
There has been a bug open for a while pointing out that the way we create direct exchanges with qpid results in leaking exchanges since qpid doesn't support auto-deleting exchanges. This was somewhat mitigated by change to use a single reply queue. This meant we created far fewer direct exchanges, but the problem persists anyway. A Qpid expert, William Henry, originally proposed a change to address this issue. Unfortunately, it wasn't backwards compatible with existing installations. This patch takes the same approach, but makes it optional and off by default. This will allow a migration period. As a really nice side effect, the Qpid experts have told us that this change will also allow us to use Qpid broker federation to provide HA. DocImpact Closes-bug: #1178375 Co-authored-by: William Henry <whenry@redhat.com> Change-Id: I09b8317c0d8a298237beeb3105f2b90cb13933d8