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https://issues.apache.org/jira/browse/FLINK-36400?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17885695#comment-17885695
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Lorenzo Nicora commented on FLINK-36400:
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This issue is coupled with FLINK-36404. I will fix together in the same PR
> 403 and 404 responses should be fatal
> -------------------------------------
>
> Key: FLINK-36400
> URL: https://issues.apache.org/jira/browse/FLINK-36400
> Project: Flink
> Issue Type: Sub-task
> Components: Connectors / Prometheus
> Reporter: Lorenzo Nicora
> Priority: Major
>
> h3. The issue
> If the endpoint requires authentication and the connector is not configured
> with correct authentication and credentials, the endpoint throws 403. This
> should be considered fatal. The connector should never continue.
> Similarly, if the endpoint URL path is misconfigured, Prometheus may respond
> with a 404. This should also be considered fatal.
> With the current behaviour, every 4xx exception (except 429) is considered
> "non-retriable" as by specs, and the connector discard and continue. But 403
> and 404 are usually caused by a misconfiguration, and the connector should
> fail.
> h3. Change required
> The error handling behaviour should be ignored on 403 or 404 responses. The
> writer should always throw an exception
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