Bug 1038716 - [oslo] With QPID, RPC calls to a topic are always fanned-out to all subscribers.
Summary: [oslo] With QPID, RPC calls to a topic are always fanned-out to all subscribers.
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat OpenStack
Classification: Red Hat
Component: openstack-ceilometer
Version: unspecified
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: rc
: 4.0
Assignee: Eoghan Glynn
QA Contact: Kevin Whitney
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2013-12-05 16:38 UTC by Perry Myers
Modified: 2019-09-09 17:16 UTC (History)
12 users (show)

Fixed In Version: openstack-ceilometer-2013.2-4.el6ost
Doc Type: Bug Fix
Doc Text:
A bug in the QPID topic consumer re-connection logic (under the v2 topology) incorrectly resulted in the creation of duplicate RPC notifications delivered to every subscribed consumer. As a result, samples derived from RPC notifications were duplicated to the extent that the collector service made multiple subscriptions to the topic control exchanges for individual services (e.g. nova). With this release, QPID now creates a single queue for each topic, to be shared among all consumers of that topic. This ensures that each RPC notification is only received by a single consumer, preventing any unnecessary duplication of samples.
Clone Of: 1038641
Environment:
Last Closed: 2013-12-20 00:41:31 UTC
Target Upstream Version:

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Links
System ID Private Priority Status Summary Last Updated
Launchpad 1257293 0 None None None Never
OpenStack gerrit 60475 0 None None None Never
OpenStack gerrit 60484 0 None None None Never
Red Hat Bugzilla 1038641 0 high CLOSED [oslo] With QPID, RPC calls to a topic are always fanned-out to all subscribers. 2021-02-22 00:41:40 UTC
Red Hat Product Errata RHEA-2013:1859 0 normal SHIPPED_LIVE Red Hat Enterprise Linux OpenStack Platform Enhancement Advisory 2013-12-21 00:01:48 UTC

Internal Links: 1038641

Description Perry Myers 2013-12-05 16:38:46 UTC 
+++ This bug was initially created as a clone of Bug #1038641 +++

Description of problem:


  See upstream bug:

  https://bugs.launchpad.net/oslo/+bug/1257293

  Note well: this bug _only_ affects those QPID configurations that have applied the fix of the following bug:

   https://bugs.launchpad.net/oslo/+bug/1178375


  _AND_ are have configured "qpid_topology_version=2"



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


How reproducible:


Steps to Reproduce:
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Actual results:


Expected results:


Additional info:

--- Additional comment from RHEL Product and Program Management on 2013-12-05 09:44:55 EST ---

Since this issue was entered in bugzilla, the release flag has been
set to ? to ensure that it is properly evaluated for this release.

--- Additional comment from Dave Allan on 2013-12-05 10:11:18 EST ---

Checking into risk of fix; may want to take for 4.0GA

--- Additional comment from Perry Myers on 2013-12-05 11:30:41 EST ---

This seems important enough to be an RC blocker for 4.0.  But doesn't this bug need to be cloned to Nova, Ceilometer, Neutron, etc (every component that copies and pastes the code from Oslo for RPC?)
Comment 1 Eoghan Glynn 2013-12-06 12:40:14 UTC 
Fix proposed to master upstream:

  https://review.openstack.org/60475
Comment 2 Eoghan Glynn 2013-12-06 12:41:18 UTC 
Fix proposed to stable/havana upstream:

  https://review.openstack.org/60484
Comment 3 Eoghan Glynn 2013-12-06 15:09:02 UTC 
Proposed on internal gerrit after IRC discussion indicated that for blockers we should not block on upstream:

  https://code.engineering.redhat.com/gerrit/16995
Comment 9 errata-xmlrpc 2013-12-20 00:41:31 UTC 
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.

http://rhn.redhat.com/errata/RHEA-2013-1859.html
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