shuke987 opened a new pull request, #67413:
URL: https://github.com/apache/doris/pull/67413
### What problem does this PR solve?
Issue Number: None
Related PR: None
Problem Summary:
Litefuse 26.2 no longer accepts legacy `trace-create`, `span-create`, and
`generation-create` events on `/api/public/ingestion`. The Code Review Runner
kept succeeding because tracing is non-blocking, but its Litefuse step returned
HTTP 400 and new traces stopped appearing after August 28.
This change converts the existing in-memory review event model to OTLP/HTTP
JSON spans and sends them to `/api/public/otel/v1/traces` with
`x-langfuse-ingestion-version: 4`. It preserves trace/span hierarchy, review
input and output, metadata, tags, model usage, payload chunking, and retry
behavior. It also surfaces HTTP error response bodies and rejects OTLP
partial-success responses when spans are dropped.
### Release note
None
### Check List (For Author)
- Test: Unit Test / Manual test
- `python3 .github/scripts/test_emit_litefuse_otel_io.py` (5 tests passed)
- Live Litefuse OTLP canary write returned HTTP 200
- Read-back verification found all 3 expected observations with valid
hierarchy, input/output, and agent-message context
- Behavior changed: No. This restores code review observability without
changing review decisions.
- Does this need documentation: No
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