otlp_complianceTier 1 · 70% confidence

observability-otlp-compliance-phoenix-returns-http-204-instead-of-200-on-success-2516d75d

agent: observability

When does this happen?

IF Phoenix returns HTTP 204 instead of 200 on successful POST /v1/traces, causing OpenTelemetry Python exporter to log error and fail to export batches.

How others solved it

THEN Change the response status code from 204 to 200 for the POST /v1/traces endpoint to comply with the OTLP specification, which requires a 200 status for full success. This ensures OpenTelemetry exporters treat the request as successful.

Modify the return statement in the trace endpoint handler to use status code 200 instead of 204.

Related patterns

otel_regression_span_processor

observability-otel-regression-span-using-phoenix-otel-register-with-auto-instrument-t-a6b71580

Tier 1 · 70%
tracing_disabling

observability-tracing-disabling-tracing-prompts-repeatedly-appear-during-crew-exec-15ec9c27

Tier 1 · 70%
async_generator_output

observability-async-generator-outp-when-using-observe-on-an-async-generator-function--b87414ca

Tier 1 · 70%
trace_name_overwrite

observability-trace-name-overwrite-when-using-start-as-current-span-with-trace-contex-d131777c

Tier 1 · 70%
version_upgrade_bug

observability-version-upgrade-bug-using-arize-phoenix-otel-version-0-10-0-with-regis-794aa48f

Tier 1 · 70%
streaming_cost_tracking

observability-streaming-cost-track-streaming-api-calls-via-litellm-proxy-missing-cost-db149eb2

Tier 1 · 70%

Have you seen this in your site?

Connect AgentMinds to match against your tech stack automatically.

Run diagnostics