[ https://issues.apache.org/activemq/browse/AMQ-855?page=all ]
Hiram Chirino resolved AMQ-855.
-------------------------------
Resolution: Fixed
no further feedback.. assuming issue is now resolved.
> Add support for prefetchSize = 0
> --------------------------------
>
> Key: AMQ-855
> URL: https://issues.apache.org/activemq/browse/AMQ-855
> Project: ActiveMQ
> Issue Type: New Feature
> Components: Broker
> Affects Versions: 4.0, 4.0.1, 4.0.2
> Environment: any
> Reporter: Vadim Pesochinskiy
> Assigned To: Hiram Chirino
> Priority: Critical
> Fix For: 4.1
>
> Attachments: ActiveMQMessageConsumer.patch,
> ActiveMQMessageConsumer.patch2, PrefetchSubscription.patch,
> region.QueueSubscription.java.patch, ZeroPrefetchConsumerTest.java.patch
>
>
> This feature would enable to support following test case:
> 2 servers are processing 3 submitted jobs with following processing times 10
> min, 1 min, 1 min. This sequence should finish in 10 minutes as one service
> will pick up the 10 minutes job, meanwhile the other one should manage the
> two 1 minute jobs. Since I cannot set prefetchSize=0, one of the 1 minute
> jobs is sitting in prefetch buffer and the jobs are processed in 11 minutes
> instead of 10.
> This is simplification of the real scenario where I have about 30 consumers
> submitting jobs to 20 consumers through AMQ 4.0.1. I have following problems:
> Messages are sitting in prefetch buffer are not available to processors,
> which results in a lot of idle time.
> Order of processing is random. For some reason Job # 20 is processed after
> Job # 1500. Since senders are synchronously blocked this can result in
> time-outs.
> Some requests are real-time, i.e. there is a user waiting, so the system
> cannot wait, so AMQ-850 does not fix this issue.
--
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators:
https://issues.apache.org/activemq/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira
