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From "Roelof Naude (JIRA)" <j...@apache.org>
Subject [jira] Commented: (AMQ-2962) Hanging at startup
Date Wed, 06 Oct 2010 14:12:41 GMT

    [ https://issues.apache.org/activemq/browse/AMQ-2962?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=62402#action_62402
] 

Roelof Naude commented on AMQ-2962:
-----------------------------------

initially thought that the bug may be related to:
http://bugs.sun.com/view_bug.do?bug_id=6822370

adding -XX:+UseMembar to the VM startup arguments did not help. guess something else may be
cause...

> 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
>            Reporter: Roelof Naude
>            Priority: Minor
>         Attachments: 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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