[jira] [Created] (AMQ-6368) Non-blocking redelivery does not calculate exponential delivery properly

["Szymon Jachim (JIRA)" <ji...@apache.org>]

Szymon Jachim created AMQ-6368:
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             Summary: Non-blocking redelivery does not calculate exponential delivery properly
                 Key: AMQ-6368
                 URL: https://issues.apache.org/jira/browse/AMQ-6368
             Project: ActiveMQ
          Issue Type: Bug
          Components: JMS client
    Affects Versions: 5.13.3
            Reporter: Szymon Jachim


Non-blocking redelivery does not calculate exponential delivery properly when retries of delivery are interspersed with (successful) deliveries of other messages. 

This is caused by the fact that last redelivery delay is stored in a field and is overwritten delivery of other messages. A possible fix is that redelivery delay can be calculated each time by simply doing multiplications in a loop (as it is done in broker) or using mathematical exponent function. At the same time redelivery count can not be a single field but an array with a counter per each message waiting for client side non-blocking redelivery.

I can provide a patch for this and a unit tests.

Related to: AMQ-3597 AMQ-1853



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