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Posted to dev@qpid.apache.org by "Alan Conway (JIRA)" <ji...@apache.org> on 2012/11/09 18:54:12 UTC
[jira] [Assigned] (QPID-4380) Channel collision on federated link
after creating/deleting ~64K bridges
[ https://issues.apache.org/jira/browse/QPID-4380?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Alan Conway reassigned QPID-4380:
---------------------------------
Assignee: Chuck Rolke (was: Alan Conway)
> Channel collision on federated link after creating/deleting ~64K bridges
> -------------------------------------------------------------------------
>
> Key: QPID-4380
> URL: https://issues.apache.org/jira/browse/QPID-4380
> Project: Qpid
> Issue Type: Bug
> Components: C++ Clustering
> Affects Versions: 0.18
> Reporter: Alan Conway
> Assignee: Chuck Rolke
>
> Description of problem:
> Link does not properly track available channel numbers for the connection, instead it uses a counter which wraps at 64K. Therefore, if you create and delete enough bridges so that the counter wraps, you will encounter a channel collision between two bridges.
> Oct 19 17:35:31 system-node1a-cluster qpidd[22883]: 2012-10-19 17:35:31 [Protocol] error Channel exception: transport-busy: Channel 1 already attached to anonymous.qpid.bridge_session_qpid.broker-replicator.bridge.da11c440-d009-4f00-800b-27f04a820cee_eb35657f-6bc9-4f9d-b871-8ccfe640953f (qpid/amqp_0_10/SessionHandler.cpp:159)
> Oct 19 17:35:31 system-node1a-cluster qpidd[22883]: 2012-10-19 17:35:31 [Protocol] error Execution exception: invalid-argument: session.detach: incorrect session name: qpid.bridge_session_qpid.replicator-TDQ.l.RRAA.RRAA+2870.amqp1.a908ab6b-2465-4d7c-a4e8-954ccf94223d_9f539e38-b017-4131-82fb-4c135144378f, expecting: qpid.bridge_session_qpid.replicator-Bridge.b.RRAA.968e1e94-fe04-4488-a411-2ddd2e53cefc_9f539e38-b017-4131-82fb-4c135144378f (qpid/amqp_0_10/SessionHandler.cpp:183)
> Version-Release number of selected component (if applicable):
> Qpid 0.18
> How reproducible:
> 100%
> Steps to Reproduce:
> 1. Create a federated link between two brokers
> 2. Create 1 bridge and then create/delete ~64K additional bridges
>
> Actual results:
> The channel counter in Link will eventually wrap and cause a collision with the first bridge even though plenty of channels are available
> Expected results:
> New bridges will be assigned unique channel numbers
> see https://bugzilla.redhat.com/show_bug.cgi?id=868403
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