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[Lambda] [DocumentDB] Support Amazon DocumentDB 8.0.x as a Lambda event source

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Évaluation

Difficulté
5/5
Temps estimé
Plus d'une semaine
Accessibilité débutants
25/100
Type d'issue
Fonctionnalité
Clarté
Plutôt claire
Activité
Calme
Stack technique
aws
Domaine
cloud, databases

Piste de recherche

Commencez par le comportement de CreateEventSourceMapping et UpdateEventSourceMapping décrit dans l’issue, puis examinez les notes relatives aux versions prises en charge dans les pages des guides Lambda et DocumentDB mentionnées ici. Le travail sera considéré comme terminé lorsque DocumentDB 8.0.x sera accepté pour les sources d’événements aws:docdb et que les deux pages de documentation décriront correctement les versions prises en charge.

Rédigé par le modèle d'indexation à partir du texte de l'issue.

Description

Community Note
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Tell us about your request

Add Amazon DocumentDB 8.0.x to the engine versions accepted by Lambda's CreateEventSourceMapping (and UpdateEventSourceMapping) for aws:docdb event sources. Today only DocumentDB 4.0 and 5.0 are accepted.

Which service(s) is this request for?

Lambda/DocumentDB

Tell us about the problem you're trying to solve. What are you trying to do, and why is it hard?

We use DocumentDB change streams as a native trigger for Lambda (event-driven processing of document changes). Our clusters run 8.0.1, and creating the trigger fails at the API:

operation error Lambda: CreateEventSourceMapping,
https response error StatusCode: 400,
InvalidParameterValueException: Engine version 8.0.1 is not supported.

This looks like a create-time version allowlist rather than a functional limitation. If we create the mapping while the cluster is on 5.0.0 and then upgrade the cluster in place to 8.0.1, the existing trigger keeps working — events continue flowing to the function with no changes. So the 8.0 engine is already compatible with the change-stream / event-source-mapping mechanism at runtime; only CreateEventSourceMapping rejects 8.0.x up front.

Impact: we can't run clusters on the current engine version and use the fully managed native trigger at the same time. That blocks us from upgrading, or forces extra infrastructure.

Are you currently working around this issue?

Create the event source mapping on a 5.0.0 cluster, then upgrade the cluster in place to 8.0.1 - the trigger survives the upgrade. Unfortunately you will be unable to add new triggers in future, which is blocker for us.

Additional context

The supported-versions notes in "Process Amazon DocumentDB events with Lambda" (Lambda dev guide) and "Using AWS Lambda with change streams" (DocumentDB dev guide) currently list only 4.0 and 5.0 and don't mention 8.0, so the error is ambiguous with a misconfiguration. Until 8.0 is supported, explicitly calling it out in both docs pages (and ideally the error message) would help. Cluster type is instance-based / regional (not elastic or global), with change streams enabled.

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