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tigrato
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vapopov
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@fspmarshall See the table below for backport results.
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carloscastrojumo
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This PR adds back combat logic to allow the current dynamoevents implementation to be able to decode cursors returned by instances using the v1 aws sdk (cursor format changed during our switch to sdk v2).
It isn't uncommon for us to forego cross-compat logic when changing cursor formats since most cursors are ephemeral things that only live for a few milliseconds, and an error in an individual request during an upgrade isn't usually anything to worry about. However, this particular cursor value is used as persistent on-disk state by the event exporter. The lack of cross-compat meant that event-handlers could become permanently broken when the control plane was upgraded, as their requests would repeatedly fail due to auth being unable to decode the cursor sent in the request.
Fixes #50554
changelog: fixed an issue that could cause teleport event handlers to become stuck in an error loop upon upgrading to v17 (fix requires upgrading auth server).