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Improve SQL query telemetry collection with an adaptive sampling rate #70553

@kevin-v-ngo

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@kevin-v-ngo

In the new telemetry logging channel, we should update the sampling rate to ensure we maximize representative data of the customer workload while limiting the volume of data sent through the pipeline (< 10 events per second per node).

The proposal is outlined in the following doc: https://docs.google.com/document/d/1evo7ZtZZpsk8hKC888A_8f6dhM_utFCBPoMsWxr5YyA/edit

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A-sql-logging-and-telemetryIssues related to slow query log, SQL audit log, SQL internal logging telemetry, etc.C-enhancementSolution expected to add code/behavior + preserve backward-compat (pg compat issues are exception)GA-blocker

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