I just had the same problem in mitaka with oslo.messaging 4.0.5. The metering.sample rabbit queue had a backlog of over 140000 messages because we didn't start the collector for about month. Once we did the server memory and swap was immediately consumed by the collector.
I just had the same problem in mitaka with oslo.messaging 4.0.5. The metering.sample rabbit queue had a backlog of over 140000 messages because we didn't start the collector for about month. Once we did the server memory and swap was immediately consumed by the collector.