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List:       activemq-dev
Subject:    [jira] Updated: (AMQ-2962) Hanging at startup
From:       "Roelof Naude (JIRA)" <jira () apache ! org>
Date:       2010-10-28 6:20:00
Message-ID: 9596066.1061288246800099.JavaMail.jira () thor
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     [ https://issues.apache.org/activemq/browse/AMQ-2962?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel \
]

Roelof Naude updated AMQ-2962:
------------------------------

    Attachment: AMQ2962.patch

Patch that resolve the issue for us. This patch is ugly. Someone more knowledgeable \
on the order of locks may provide more insight.

> Hanging at startup
> ------------------
> 
> Key: AMQ-2962
> URL: https://issues.apache.org/activemq/browse/AMQ-2962
> Project: ActiveMQ
> Issue Type: Bug
> Components: Message Store
> Affects Versions: 5.4.1
> Environment: Fedora Core 12
> OracleSun java 1.6:
> java version "1.6.0_21"
> Java(TM) SE Runtime Environment (build 1.6.0_21-b06)
> Java HotSpot(TM) 64-Bit Server VM (build 17.0-b16, mixed mode)
> JBoss 4.2.3 using AMQ resource adapter.
> Reporter: Roelof Naude
> Attachments: amq.ra.threads.txt, AMQ2962.patch, debug_traces_hanging.log, \
> debug_traces_startup.log, thread_dump_during_hang.txt 
> 
> Noticed today the activemq was hanging during startup. Investigation revealed that \
> it is tied to expiration of messages at startup. The only way to recover from this \
> was to kill -9 the VM and delete the kahadb message store. Further testing was done \
> whereby message expiry time was set to longer period. AMQ started up just fine. \
> Another test was performed whereby: 1. subscribe for messages
> 2. send a few messages
> 3. disconnect consumer
> 4. send more messages (1 or 2 will do)
> 5. shutdown AMQ
> 6. wait for a time period exceeded the expiration time of the messages
> 7. start AMQ. at this time it should be hanging
> Logs and thread dumps attached.

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