sampling

Haystack query failure after invalid sampling parameter in multi-region replication

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Problem In a multi‑region replication deployment of Haystack, queries that should be served from any replica start failing with a 400 Bad Request error. The failure appears only after a recent configuration change that introduced a new sampling parameter in the haystack.yaml file. The symptom is observed across all regions, but the primary region shows … Read more

Nginx invalid sampling parameter error during high traffic

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Problem Description During a traffic surge on a high‑volume API gateway powered by Nginx Plus, the following symptoms were observed: Intermittent 502 Bad Gateway responses. HTTP 500 payloads containing the phrase invalid sampling parameter. NGINX error log entries such as: 2024/01/15 10:23:41 [error] 1123#1123: *4567 configuration file /etc/nginx/conf.d/api.conf test failed: invalid sampling_rate 1.5, allowed range is … Read more

TensorRT invalid sampling parameters in staging environment

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Problem Description During the staging deployment of a GPU‑accelerated inference service, the TensorRT engine build fails with the following error messages: [TensorRT] Error: Invalid sampling parameters (code: 3) Failed to create optimization profile: Invalid sampling parameters for input ‘input_0’ tensorrt.tensorrt.BuilderError: Invalid sampling parameters ASSERT FAILED: validateSamplingParameters() – sampling parameters out of allowed range The failure … Read more