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From "Hans Bausewein (JIRA)" <>
Subject [jira] Created: (AMQ-1849) Slave threads increasing when sending to temporary queue
Date Wed, 09 Jul 2008 17:30:00 GMT
Slave threads increasing when sending to temporary queue

                 Key: AMQ-1849
             Project: ActiveMQ
          Issue Type: Bug
    Affects Versions: 5.2.0
         Environment: Pure master/slave
JBoss 4.0.5 GA   (on Java 1.5.0_14)
few days old ActiveMQ 5.2.0-SNAPSHOT (on Java  "1.6.0_06")

            Reporter: Hans Bausewein
         Attachments: activemqjee-0.0.1-src.tar.gz, jboss.log

Deployed the attached TextMDB (modified JBoss example) to our JBoss 4.0.5 GA server (cluster).

- send a message to "queue.A" with Reply To set to "queue.REPLY_A"

The TextMDB bean: 
   - creates a temporary queue with NON_PERSISTENT delivery mode
   - forwards message body to "queue.B" and sets the reply queue to this temporary queue
   - another (or the same) instance of TextMDB replies and adds some text, replies to the
temporary queue
   - the first TextMDB replies to "queue.REPLY_A"

Works fine, except that every time a temporary queue message is sent, the number of threads
on the slave increases by 3.

On the master the threads are destroyed after a while, but on the slave they persist, growing
to "OutOfMemoryError: unable to create new native thread"

Temporary queue Thread Name example: TempQueue:  ID:{HOSTNAME}-59619-1215591084487-0:16:5
+ 2 topic threads

That thread ID can be found ActiveMQ messages in the attached JBoss log.

Have I created a bug im my code or have I found a bug in the ActiveMQ server?

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