[jira] [Created] (AMQ-6854) Log a warning if paging in for queues blocks on usage constraints

["Gary Tully (JIRA)" <ji...@apache.org>]

Gary Tully created AMQ-6854:
-------------------------------

             Summary: Log a warning if paging in for queues blocks on usage constraints
                 Key: AMQ-6854
                 URL: https://issues.apache.org/jira/browse/AMQ-6854
             Project: ActiveMQ
          Issue Type: Improvement
          Components: Broker
    Affects Versions: 5.15.0
            Reporter: Gary Tully
            Assignee: Gary Tully
            Priority: Minor
             Fix For: 5.16.0


In a case where the cache is disabled but there is no flow control, messages can continue to be produced directly to the store.  Dispatch from memory will continue and paging in will work in the normal way.
However it is possible for queues to starve each other when paging in, such that some queues with no messages in memory will not be able to page in.
In this case, it is important that we log a warning to have some indication in the logs that consumers may be starved such that memory limits can be increased if necessary.



--
This message was sent by Atlassian JIRA
(v6.4.14#64029)