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From "B. Guillon" <benoit.guil...@sungard.com>
Subject Messages in memory
Date Fri, 14 Nov 2008 18:41:39 GMT

Hello,

I know this problem was already mentionned in different posts or JIRA issues
but I cannot find a way to fix it. I'm using ActiveMQ 4.1.1 with
journaledJDBC persistence adapter.

When persistent messages are sent on a topic and that several durable
subscribers are registered on this topic, if one of the subscribers is not
connected, messages are kept by ActiveMQ in memory (and in the journal)
until the subscriber comes back and consumes the messages.

Problems append when the memory limit of the broker is reached. The broker
does not respond anymore because all the transport threads get locked in 

org.apache.activemq.memory.UsageManager.waitForSpace(UsageManager.java:105)

Consumers don't get any messages and producers cannot send messages anymore.
No logs on both server and client side.

My question is: is there a way to tell ActiveMQ not to keep messages in
memory once they are flushed in the journal?

Thanks per advance

Benoit


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