[CAMEL-7658] Out of order processing of ActiveMQ queue with a single consumer with CACHE_NONE

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Cannot Reproduce
• Affects Version/s: 2.13.2
• Fix Version/s: 2.15.0
• Component/s: camel-activemq, camel-jms

Environment

Windows 7 x64. Java 7 & 8

• Estimated Complexity: Unknown
• Assignee: Claus Ibsen
• Reporter: Paul McCulloch
• Created: 04/Aug/14 10:40
• Updated: 15/Feb/15 16:53
• Resolved: 15/Feb/15 16:53

Description

Messages are occasionally consumed out of order when the JMS or ActiveMQ component has a cache level name of CACHE_NONE or CACHE_SESSION.

The out of order message id is related to the previous message. For example: messages received are:
02885-DESKTOP-60405-1407148471972-3:1:2:1:315
02885-DESKTOP-60405-1407148471972-3:1:2:1:1316
02885-DESKTOP-60405-1407148471972-3:1:2:1:316

Attempts to debug cause the issue not to occur - perhaps some sort of race condition.

Test case attached. An equivalent test with plain Spring JMS, consuming via DMLC passes.