Is task delivery exactly once as in a SQS FIFO queue?

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Hi

AWS Step Functions looks pretty promising for our use case according to our study.
However, regarding the technical guarantees of GetActivityTask, I wonder could you confirm that the semantics are similar to that of a SQS FIFO queue?

Searching on the forum seems to imply that's the case:

https://forums.aws.amazon.com/thread.jspa?threadID=252251&tstart=0
https://forums.aws.amazon.com/thread.jspa?threadID=253480&tstart=75

However, it would be great if you could confirm that tasks delivered by Step Functions have exactly once semantics.

Thanks!

asked 5 years ago52 views
5 Answers
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Yes, it'd be great to get a confirmation that GetActivityTask guarantees no duplicates will be delivered for exactly-once processing on the workers.

answered 5 years ago
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@techwharf did you find out the answer to this ?
can someone in aws step function team answer this, please ?

answered 5 years ago
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anyone from AWS team cares to comment?

answered 5 years ago
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hmm I'm still waiting on this confirmation from AWS team and it is rather frustrating not getting an official answer. There is no information on this anywhere else.

I am holding off on our production release until I have an answer. At this stage, I am not even sure if Step function is the right choice or production ready given AWS team isn't transparent on such a basic behavior. I am the third person asking this question without an answer.

Is there anyone moderating this forum, seems very poor customer service. Very frustrated !!

answered 5 years ago
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Yes. AWS StepFunctions provides exactly-once semantics on GetActivityTask

seun
answered 5 years ago

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