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From "james strachan (JIRA)" <j...@apache.org>
Subject [jira] Commented: (AMQ-850) add the ability to timeout a consumer to prevent a bad, hung or unused consumer consumer from grabbing messages
Date Wed, 09 Aug 2006 18:13:23 GMT
    [ https://issues.apache.org/activemq/browse/AMQ-850?page=comments#action_36733 ] 
            
james strachan commented on AMQ-850:
------------------------------------

Vadim: agreed in the case where the consumer just never processes any messages and the receive()
method is never called. A consumer would basically be terminated until a call to receive*()
which would re-awaken it again. 

Though the consumer may be in the middle of processing a message but is just taking too long
due to some hang/lock (either after calling receive() and not calling commit() / acknowledge()
- or be inside a MessageListener method call - and may need to actually be closed preventing
any future messages being dispatched.

> add the ability to timeout a consumer to prevent a bad, hung or unused consumer consumer
from grabbing messages
> ---------------------------------------------------------------------------------------------------------------
>
>                 Key: AMQ-850
>                 URL: https://issues.apache.org/activemq/browse/AMQ-850
>             Project: ActiveMQ
>          Issue Type: New Feature
>          Components: Broker
>            Reporter: james strachan
>             Fix For: 4.2
>
>
> If a MessageConsumer is created but not used, it still tends to get its prefetch-buffer
worth of messages. If it does not process them within a specific time the consumer should
either be closed, or the messages unacked and flushed from the buffer so that the consumer
does not hog the messages.
> Similarly if a consumer gets a message but then locks up without processing the message
we should lazily kill the consumer releasing and redelivering all its messages

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