Stop attaching euid to browser OpenTelemetry records - #4149
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The site copied that cookie onto every client span and log. Those records do not need it. Co-Authored-By: Cursor Grok 4.6 <noreply@anthropic.com>
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Docs preview (local build)Handbook preview: https://docs-v3-preview.elastic.dev/elastic/docs-builder/pull/4149/ |
akira28
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Sep 18, 2026
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The cookie assertion can pass without initializing if a Synthetics userAgent spy leaks into the next test. Co-Authored-By: Cursor Grok 4.6 <noreply@anthropic.com>
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Browser OpenTelemetry no longer copies the
euidcookie onto client spans and logs.Affects: Site UI
Prompt summary: Open a follow-up that stops the browser from attaching
euidto telemetry. Leave the API path as it is. Keep the public description short and factual.Why
The browser currently copies the
euidcookie onto every client span and log. Search and other UI events emit many of those records. Those records do not need the cookie.What
Browser telemetry
Client spans and logs no longer receive
user.euidfrom theeuidcookie.initializeOtelno longer readsdocument.cookie.API telemetry
Server-side OpenTelemetry is unchanged. This PR does not touch that path.
Tests
A Jest case checks that
initializeOteldoes not readdocument.cookie.Verify
Out of scope: API OpenTelemetry enrichment.
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