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Posted to issues@activemq.apache.org by "Andreas Gies (JIRA)" <ji...@apache.org> on 2017/02/27 11:39:45 UTC
[jira] [Commented] (AMQ-6568) Consumers stop consuming
[ https://issues.apache.org/jira/browse/AMQ-6568?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15885623#comment-15885623 ]
Andreas Gies commented on AMQ-6568:
-----------------------------------
I have provided the heapdumps of two affected containers here:
https://www.dropbox.com/sh/p7nnaz5qyqhabkn/AADFA2AqtBhsiQPhBuLzxDtSa?dl=0
The size of the heap dumps was just too big to attach to JIRA. I hope that way of sharing is ok.
> Consumers stop consuming
> -------------------------
>
> Key: AMQ-6568
> URL: https://issues.apache.org/jira/browse/AMQ-6568
> Project: ActiveMQ
> Issue Type: Bug
> Components: Broker, JMS client
> Affects Versions: 5.14.2
> Environment: CentOS 6.5, Java 7, 64-bit
> Reporter: Andreas Gies
> Attachments: broker.xml, ThreadDump.txt, UnDamaged_ThreadDump.txt.zip
>
>
> We are working on a fairly large distributed project using ActiveMQ as our JMS backend.
> Currently we are using Version 5.14.2.
> The application consists of many containers communicating over AMQ.
> All JMS communication endpoints are implemented with Camel 2.17.3.
> The container itself is an OSGi container on top of Apache Felix, all implemented in Scala.
> The production version is based on Scala 2.10 / JDK 7. The next version will be Scala 2.11 / JDK 8.
> We are not using Karaf, but have our own bundles to implement container configuration
> and distribution.
> The overall install base is roughly 2500 containers in as many local site connected to the
> central data center. The data center does not run AMQ, but a different JMS provider. All local
> containers use AMQ und bridge into the data center.
> Our problem is that we observe in ~1% of our containers that messages are not being delivered
> from AMQ. The Queue Size is > 0 and the consuming Camel Route is started, but no message
> is dispatched. Message producers can still produce messages, but none are dispatched.
> In such a scenario no messages are dispatched to any consumers. Restating the route bundles
> does not have an effect, only restarting the containers rectifies the problem.
> Our investigation so far has not given any hints what might be special regarding the circumstances
> when we encounter the problem. We have taken thread dumps from containers in that state, but
> have not been able to spot the problem.
> The initial question is whether someone in the community could provide us a hint how we could
> narrow down the problem.
> For today I am attaching our AMQ configuration file and also one of latest thread dumps.
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