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Posted to dev@activemq.apache.org by "James Green (JIRA)" <ji...@apache.org> on 2010/10/27 10:57:00 UTC
[jira] Created: (AMQ-3001) Ghost durable topic subscribers
Ghost durable topic subscribers
-------------------------------
Key: AMQ-3001
URL: https://issues.apache.org/activemq/browse/AMQ-3001
Project: ActiveMQ
Issue Type: Bug
Affects Versions: 5.4.1
Environment: Ubuntu 9.10
Reporter: James Green
Priority: Minor
Listed on the Durable Topic Subscribers within the web interface I now have:
Client ID: NC_ubuntu_inbound_blofeld
Subscription Name: NC-DS_blofeld_Account.Requests
Connection ID: ID:blofeld-37576-1288168498890-3:1
I did have a subscription however it lacked a Client-ID, so it disconnected and I restarted ActiveMQ. The result is shown above. There are allegedly no such connections listed on the Connections page.
No idea what NC or NC-DS mean! This is confusing at best.
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[jira] Commented: (AMQ-3001) Ghost durable topic subscribers
Posted by "Gary Tully (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/activemq/browse/AMQ-3001?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=62864#action_62864 ]
Gary Tully commented on AMQ-3001:
---------------------------------
When a durable is forwarded through a network a well known durable subscriber needs to be created that can out live the original, so if there is a partition, there will be no loss of messages for the networked durable.
They use the prefix,NC-DS, (network connector durable sub) prefix comprised of the the local broker and destination physical name, see org.apache.activemq.network.DurableConduitBridge#getSubscriberName
The expectation is that the connection associated with the durable sub will change when the same durable again subscribes, the point being that the nc-ds can outlive the new connection.
The dynamicOnly property of a network connector can controll whether the nc-ds is activated on startup, when true, the NC-DS will only be activated when the original durable sub again (dynamically) reconnects. With dynamicOnly=true, it is possible to miss messages when disconnected, so it defaults to false.
The NC-DS-xx will only be deleted when the original durable sub unsubscribes.
> Ghost durable topic subscribers
> -------------------------------
>
> Key: AMQ-3001
> URL: https://issues.apache.org/activemq/browse/AMQ-3001
> Project: ActiveMQ
> Issue Type: Bug
> Affects Versions: 5.4.1
> Environment: Ubuntu 9.10
> Reporter: James Green
> Priority: Minor
>
> Listed on the Durable Topic Subscribers within the web interface I now have:
> Client ID: NC_ubuntu_inbound_blofeld
> Subscription Name: NC-DS_blofeld_Account.Requests
> Connection ID: ID:blofeld-37576-1288168498890-3:1
> I did have a subscription however it lacked a Client-ID, so it disconnected and I restarted ActiveMQ. The result is shown above. There are allegedly no such connections listed on the Connections page.
> No idea what NC or NC-DS mean! This is confusing at best.
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[jira] Issue Comment Edited: (AMQ-3001) Ghost durable topic
subscribers
Posted by "Gary Tully (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/activemq/browse/AMQ-3001?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=62867#action_62867 ]
Gary Tully edited comment on AMQ-3001 at 10/27/10 5:41 AM:
-----------------------------------------------------------
Added a faq entry "I see NC- client-ids, what does that mean?" to explain: https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=24184563
was (Author: gtully):
Added a faq entry to explain: https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=24184563
> Ghost durable topic subscribers
> -------------------------------
>
> Key: AMQ-3001
> URL: https://issues.apache.org/activemq/browse/AMQ-3001
> Project: ActiveMQ
> Issue Type: Bug
> Affects Versions: 5.4.1
> Environment: Ubuntu 9.10
> Reporter: James Green
> Assignee: Gary Tully
> Priority: Minor
>
> Listed on the Durable Topic Subscribers within the web interface I now have:
> Client ID: NC_ubuntu_inbound_blofeld
> Subscription Name: NC-DS_blofeld_Account.Requests
> Connection ID: ID:blofeld-37576-1288168498890-3:1
> I did have a subscription however it lacked a Client-ID, so it disconnected and I restarted ActiveMQ. The result is shown above. There are allegedly no such connections listed on the Connections page.
> No idea what NC or NC-DS mean! This is confusing at best.
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[jira] Resolved: (AMQ-3001) Ghost durable topic subscribers
Posted by "Gary Tully (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/activemq/browse/AMQ-3001?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Gary Tully resolved AMQ-3001.
-----------------------------
Resolution: Working as Designed
Assignee: Gary Tully
Added a faq entry to explain: https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=24184563
> Ghost durable topic subscribers
> -------------------------------
>
> Key: AMQ-3001
> URL: https://issues.apache.org/activemq/browse/AMQ-3001
> Project: ActiveMQ
> Issue Type: Bug
> Affects Versions: 5.4.1
> Environment: Ubuntu 9.10
> Reporter: James Green
> Assignee: Gary Tully
> Priority: Minor
>
> Listed on the Durable Topic Subscribers within the web interface I now have:
> Client ID: NC_ubuntu_inbound_blofeld
> Subscription Name: NC-DS_blofeld_Account.Requests
> Connection ID: ID:blofeld-37576-1288168498890-3:1
> I did have a subscription however it lacked a Client-ID, so it disconnected and I restarted ActiveMQ. The result is shown above. There are allegedly no such connections listed on the Connections page.
> No idea what NC or NC-DS mean! This is confusing at best.
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