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From "Keith Wall (JIRA)" <j...@apache.org>
Subject [jira] [Created] (QPID-7012) Connections producing lots of non-persistent messages can cause other transactions to be delayed/time out
Date Thu, 21 Jan 2016 11:58:39 GMT
Keith Wall created QPID-7012:
--------------------------------

             Summary: Connections producing lots of non-persistent messages can cause other
transactions to be delayed/time out
                 Key: QPID-7012
                 URL: https://issues.apache.org/jira/browse/QPID-7012
             Project: Qpid
          Issue Type: Bug
          Components: Java Broker
            Reporter: Keith Wall


Work mixes that include

* connection producing large numbers of persistent messages *without* transactions 
* transactional work

may see timeouts in some situations.  

In the HA case, the non-transaction messages are sent to the replicas lazily, so all replicas
may get behind.  This means the a transaction will need to wait for the replicas catch up
before its transaction completes.

In the non-HA (and HA on the master), the commit related to the transactional work may queue
behind the commit jobs related to the non-transactional work.

This problem affects only publishes using unconfirmed publishes, currently the defect for
AMQP 0-8..0-91 on in the Java Client.



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