fix(llmobs): recreate writer on fork [backport 2.12] #10330
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This PR ensures that the LLMObsSpanWriter is correctly recreated and restarted on a forked process. Previously, on a process fork we were not recreating/restarting the writer worker correctly. This resulted in situations with using celery/gunicorn where LLMObs spans were created, but never submitted as the forked worker process did not have a running writer thread. ## Checklist - [x] PR author has checked that all the criteria below are met - The PR description includes an overview of the change - The PR description articulates the motivation for the change - The change includes tests OR the PR description describes a testing strategy - The PR description notes risks associated with the change, if any - Newly-added code is easy to change - The change follows the [library release note guidelines](https://ddtrace.readthedocs.io/en/stable/releasenotes.html) - The change includes or references documentation updates if necessary - Backport labels are set (if [applicable](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting)) ## Reviewer Checklist - [x] Reviewer has checked that all the criteria below are met - Title is accurate - All changes are related to the pull request's stated goal - Avoids breaking [API](https://ddtrace.readthedocs.io/en/stable/versioning.html#interfaces) changes - Testing strategy adequately addresses listed risks - Newly-added code is easy to change - Release note makes sense to a user of the library - If necessary, author has acknowledged and discussed the performance implications of this PR as reported in the benchmarks PR comment - Backport labels are set in a manner that is consistent with the [release branch maintenance policy](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting) --------- Co-authored-by: Sam Brenner <[email protected]> (cherry picked from commit 64b5804)
Datadog ReportBranch report: ✅ 0 Failed, 1505 Passed, 39485 Skipped, 27m 33.44s Total Time |
sabrenner
approved these changes
Aug 22, 2024
emmettbutler
approved these changes
Aug 22, 2024
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Backport 64b5804 from #10249 to 2.12.
This PR ensures that the LLMObsSpanWriter is correctly recreated and restarted on a forked process.
Previously, on a process fork we were not recreating/restarting the writer worker correctly. This resulted in situations with using celery/gunicorn where LLMObs spans were created, but never submitted as the forked worker process did not have a running writer thread.
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