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Date: Tue, 29 Dec 2009 19:36:41 +0000 (UTC)
From: "Dragisa Krsmanovic (JIRA)" <jira@apache.org>
To: camel-dev@activemq.apache.org
Subject: [jira] Commented: (CAMEL-2305) Polling consumer does not work well
 with transacted ActiveMQ 5.3.0
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    [ https://issues.apache.org/activemq/browse/CAMEL-2305?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=56689#action_56689 ] 

Dragisa Krsmanovic commented on CAMEL-2305:
-------------------------------------------

Setting prefetch to 0 is not ideal because it can impact performance.  Allowing to set consumer prefetch size as an option in AMQ component url would, at least, allow us to still use prefetch in other routes that do not use polling consumer.

> Polling consumer does not work well with transacted ActiveMQ 5.3.0
> ------------------------------------------------------------------
>
>                 Key: CAMEL-2305
>                 URL: https://issues.apache.org/activemq/browse/CAMEL-2305
>             Project: Apache Camel
>          Issue Type: Bug
>          Components: camel-jms
>    Affects Versions: 2.0.0, 2.1.0, 2.2.0
>            Reporter: Dragisa Krsmanovic
>         Attachments: JmsPollingConsumerTest.patch
>
>
> A bean in a activemq route is consuming messages from another activemq queue.  Instead of reading all queued messages, it always gets just the first message in the queue.
> {code:java}
> while ((exchange = consumer.receive("activemq:queue", 2000l)) != null) {
>         ...
> }
> {code}
> * This did not happen with ActiveMQ 5.2.0
> * This does not happen if Spring transaction support is not set for activemq component.
> * This does not happen if consumer bean is invoked from direct: route.

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