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From Jean-Baptiste Onofré (JIRA) <j...@apache.org>
Subject [jira] [Created] (BEAM-2246) JmsIO should use CLIENT_ACK instead of AUTO_ACK
Date Wed, 10 May 2017 08:50:04 GMT
Jean-Baptiste Onofré created BEAM-2246:
------------------------------------------

             Summary: JmsIO should use CLIENT_ACK instead of AUTO_ACK
                 Key: BEAM-2246
                 URL: https://issues.apache.org/jira/browse/BEAM-2246
             Project: Beam
          Issue Type: Bug
          Components: sdk-java-extensions
    Affects Versions: 0.6.0
            Reporter: Jean-Baptiste Onofré
            Assignee: Jean-Baptiste Onofré


As {{JmsIO}} manages the messages acknowledgement in its checkpoint, it should not use {{AUTO_ACKNOWLEDGE}}
but {{CLIENT_ACKNOWLEDGE}}.

With {{AUTO_ACK}}, the ack is sent to the JMS broker as soon as the message is consumed. Basically,
it means that the checkpoint is useless as, if something goes wrong in the pipeline, the messages
is already consumed from the broker (so no way to redeliver the message).

Instead, {{JmsIO}} should use {{CLIENT_ACK}} and explicitly send the ack (commit) in the checkpoint
(the code is already in place). 



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