Bug 985869 - Do not make durable subscriptions auto-delete by default
Do not make durable subscriptions auto-delete by default
Product: Red Hat Enterprise MRG
Classification: Red Hat
Component: qpid-cpp (Show other bugs)
Unspecified Unspecified
medium Severity medium
: 3.1
: ---
Assigned To: Gordon Sim
Petr Matousek
: Improvement
Depends On:
  Show dependency treegraph
Reported: 2013-07-18 08:02 EDT by Petr Matousek
Modified: 2015-04-14 09:46 EDT (History)
4 users (show)

See Also:
Fixed In Version: qpid-cpp-0.30-2
Doc Type: Enhancement
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2015-04-14 09:46:47 EDT
Type: Bug
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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External Trackers
Tracker ID Priority Status Summary Last Updated
Apache JIRA QPID-5002 None None None Never

  None (edit)
Description Petr Matousek 2013-07-18 08:02:06 EDT
Description of problem:

Subscription queues defined using amqp1.0 are *not* auto-delete by default. 
Subscription queues defined using amqp0-10 are auto-delete by default.
This puts amqp0-10 and amqp1.0 out of sync.

After discussion with gsim we agreed that defining durable subscription queues to be auto-delete by default without a delayed time for the auto-delete, would not make much sense.

ie. on broker restart, the broker terminates all the connections (and sessions), so in fact the durable queue is deleted on broker restart. 

note: By specifying that a subscription is durable, the client is taking on responsibility for deleting it to some extent.

The right solution might be to have a configurable time-delayed auto-delete on subscription queues by default. This will protect the broker from clients that go off and leave stale subscriptions after a crash, but it still retain the general ability to survive a crash and re-establish subscription without lost messages. I'm going to fill a RFE bug for this improvement.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. $cppapi/drain -f amq.direct &
2. qpid-config queues
   the just created subscription queue is auto-del

Actual results:
Subscription queue is auto-delete by default (amqp0-10)

Expected results:
Subscription queue is not auto-delete by default (amqp0-10)

Additional info:
Comment 1 Petr Matousek 2013-07-18 08:06:23 EDT
> ... I'm going to fill a RFE bug for this improvement.

please see bug 985870
Comment 2 Gordon Sim 2013-07-18 15:54:40 EDT
Fixed upstream: https://svn.apache.org/r1504621
Comment 4 Petr Matousek 2015-03-30 07:40:19 EDT
This improvement has been implemented. 
Verified on rhel6.6 (x86_64 and i386) and rhel7 (x86_64).

The timed auto-delete (default to 120s) is now added by default to the subscription queue when a durable subscription is requested. This works for both amqp0-10 and amqp1.0, but only if C++ client is used (Using other clients the auto-delete-timeout must be explicitly set for the link). please see bug 985870 for details.


Comment 7 errata-xmlrpc 2015-04-14 09:46:47 EDT
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.


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