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Posted to issues@activemq.apache.org by "Piotr Klimczak (Jira)" <ji...@apache.org> on 2021/06/14 11:09:00 UTC

[jira] [Created] (AMQ-8299) ActiveMQMapMessage should use LinkedHashMap to preserve original order

Piotr Klimczak created AMQ-8299:
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             Summary: ActiveMQMapMessage should use LinkedHashMap to preserve original order
                 Key: AMQ-8299
                 URL: https://issues.apache.org/jira/browse/AMQ-8299
             Project: ActiveMQ
          Issue Type: Bug
          Components: JMS client
    Affects Versions: 5.16.2
            Reporter: Piotr Klimczak


The core principle of messaging system should be that payload sent by produced is received exactly same (unmodified) on consumer side.

However due to ActiveMQMapMessage using HashMap for map data, the order of entries is not guaranteed.
This is especially true when we are sending LinkedHashMap on produced side. Then the consumer side will receive out of order data.



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