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From "Alex Rudyy (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (QPID-3784) Add special JVM environment variable to run dispatcher thread as daemon/non deamon depending from its value.
Date Thu, 26 Jan 2012 14:04:40 GMT

     [ https://issues.apache.org/jira/browse/QPID-3784?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Alex Rudyy updated QPID-3784:

    Status: Ready To Review  (was: In Progress)
> Add special JVM environment variable to run dispatcher thread as daemon/non deamon depending
from its value.
> ------------------------------------------------------------------------------------------------------------
>                 Key: QPID-3784
>                 URL: https://issues.apache.org/jira/browse/QPID-3784
>             Project: Qpid
>          Issue Type: Improvement
>          Components: Java Client
>    Affects Versions: 0.15
>            Reporter: Alex Rudyy
>            Assignee: Alex Rudyy
>             Fix For: 0.15
>         Attachments: 0001-QPID-3784-Introduce-JVM-env-variable-to-run-a-dispat.patch
> Dispatcher thread needs be set daemon/non-daemon depending of new configuration option
to allow manipulating this behaviour.
> Historically, for the 0-8/0-9/0-9-1 client the use of Mina kept the
> JVM alive when a MessageListener was set, allowing asynchronous
> delivery to continue without the user having taken any explicit action
> to keep the JVM alive. Since we removed Mina this is no longer the
> case, and if there are no non-daemon threads then the JVM will now
> exit even though the user has set a MessageListener set. Investigating
> other providers suggests the typical behaviour is to make use of
> non-daemon threads by default, preventing this happening, but allowing
> users who desire that behaviour to configure it as such.
> For example, tibco seem to do exactly what I am proposing with their
> Dispatcher threads:
> https://docs.tibco.com/pub/enterprise_message_service/6.1.0-august-2011/doc/html/tib_ems_api_reference/api/javadoc/com/tibco/tibjms/Tibjms.html#PROP_DAEMON_DISPATCHER
> ActiveMQ seems to control this through transport options, defaulting
> to non-daemon threads with an option to reconfigure it:
> http://activemq.apache.org/tcp-transport-reference.html

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