[CAMEL-7146] NPE in Aggregator when completionSize = 1

• Type: Bug
• Status: Resolved
• Priority: Trivial
• Resolution: Fixed
• Affects Version/s: 2.12.2
• Fix Version/s: 2.12.3, 2.13.0
• Component/s: camel-core
• Labels: aggregator
• Estimated Complexity: Unknown
• Assignee: Claus Ibsen
• Reporter: Stefan Burkard
• Created: 22/Jan/14 08:32
• Updated: 06/Feb/14 09:51
• Resolved: 06/Feb/14 09:51

Description

A Camel aggregator with persistence repository cannot have a completionSize of 1. If this is configured, every message produces a NPE with the attached stacktrace.

I have also attached a small example project that shows the Exception. As soon as the completionSize is > 1, it runs fine.

This is just a minor flaw, since I cannot think about a really useful case with completionSize 1, but it worked with earlier versions of Camel.

As an alternative (if completionSize 1 should not be used), Camel could throw an error during Context startup when completionSize < 2.