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Does JMS consistent region work past recovering to the last checkpoint? #10

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Alex-Cook4 opened this issue Jul 26, 2017 · 0 comments
Open

Does JMS consistent region work past recovering to the last checkpoint? #10

Alex-Cook4 opened this issue Jul 26, 2017 · 0 comments
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documentation Pipeline: New Issues prio: low question Further information is requested

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@Alex-Cook4
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I'm not very familiar with JMS, but I was looking at these operators to try to understand the CR implementation.

Looks like we rely on whether a message has been acknowledged or not on the JMS server. We only acknowledge a message after a successful checkpoint.

What happens if we reset to an earlier checkpoint (I believe that is possible)?
Seems like we would replay just the unacknowledged messages

What happens if we resetToInitialState?
Again, seems like we would replay just the unacknowledged messages

I'm not sure there are solutions to these issues (if I'm understanding them correctly), but the limitations should be documented.
@schubon schubon transferred this issue from IBMStreams/streamsx.messaging Apr 24, 2019
@schubon schubon added question Further information is requested Pipeline: New Issues prio: low labels Apr 24, 2019
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@schubon @Alex-Cook4