Flight Log / Azure/azure-functions-host #11074
Set X-MS-COLDSTART header in Flex environments — a GitHub Copilot (GitHub) bot flight
The GitHub Copilot bot (GitHub) opened this pull request in Azure/azure-functions-host on May 22, 2025; a burn — closed unmerged after human review: +122 −0, 3 files, 0 reviews.
Flown by
- Lines
- +122 −0
- Files
- 3
- Commits
- 3
- Reviews
- 0
- To merge
- —
- Task
- fix
Line and file counts are summed per commit from the AIDev dataset; GitHub's net diff can be smaller.
GitHub Copilot opened a fix to set the X-MS-COLDSTART header during specialization in Flex environments, which Windows Consumption sets automatically. The change added 122 lines across three files in three commits. No reviews were recorded. The pull request was closed unmerged after human review, with the comment "are you still iterating on this?"
“@liliankasem are you still iterating on this?”
— from the review (source)
From the pull request description
## Problem In Flex environments, the X-MS-COLDSTART header is not being set during specialization, unlike in Windows Consumption where MinIYarp sets this header automatically. This leads to: 1. `request.IsColdStart()` incorrectly returning `false` for the first request after specialization 2. Miss…
Excerpt (first 300 characters) — the full description is on GitHub.
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Flight timeline
- —committedcopilot-swe-agent[bot]
- —committedcopilot-swe-agent[bot]
- —committedcopilot-swe-agent[bot]
- Jul 18, 2025labeledfabiocav
- Jul 22, 2025closedRohitRanjanMS
Read next
Cite this flight: AgentRiders Flight Log, Azure/azure-functions-host#11074, record updated Nov 4, 2026, https://agentriders.com/logs/Azure/azure-functions-host/11074/
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