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check_version() fails on Azure Event Hubs since 2.1.3 #2602

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ethiebautgeorge-nasuni opened this issue Apr 29, 2025 · 2 comments · Fixed by #2603
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check_version() fails on Azure Event Hubs since 2.1.3 #2602

ethiebautgeorge-nasuni opened this issue Apr 29, 2025 · 2 comments · Fixed by #2603

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@ethiebautgeorge-nasuni
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Versions since 2.1.3 do not work with Azure Event Hubs any longer.

This is because of this commit: https://github.com/dpkp/kafka-python/pull/2558/files

Issue is with self._api_versions_idx = 4

Setting this to 2 (as it previously was) fixes the problem.

It looks like Azure Event Hubs automatically breaks the connection as soon as it receives a payload with this version.

Suggestion: Add some configuration parameter to set the default _api_versions_idx
@dpkp
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dpkp commented Apr 29, 2025

You should be able to work around this problem by passing an explicit api_version to your producer/consumer instances.

@dpkp dpkp mentioned this issue Apr 29, 2025
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@dpkp dpkp changed the title Versions since 2.1.3 do not work with Azure Event Hubs any longer check_version() fails on Azure Event Hubs since 2.1.3 Apr 29, 2025
@ethiebautgeorge-nasuni
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Wow thanks @dpkp ! That was quick!

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Always try ApiVersionsRequest v0, even on broker disconnect dpkp/kafka-python
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@dpkp @ethiebautgeorge-nasuni