[MINOR][DOCS] Use AGENTS.md for nested project instructions#57501
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[MINOR][DOCS] Use AGENTS.md for nested project instructions#57501cloud-fan wants to merge 1 commit into
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dongjoon-hyun
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Jul 24, 2026
uros-b
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HyukjinKwon
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thanks for review, merging to master/4.x! |
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### What changes were proposed in this pull request? Add project-instruction discovery guidance to the root `AGENTS.md`. Agents should discover nested `AGENTS.md` files in the current directory and its ancestors, with more specific instructions taking precedence for their directory scope. ### Why are the changes needed? Nested `AGENTS.md` files are a common pattern for providing subsystem-specific guidance. Spark is expected to adopt this pattern soon, so the root instructions should define how agents discover and prioritize those files consistently. ### Does this PR introduce _any_ user-facing change? No. ### How was this patch tested? Documentation-only change. Verified with `git diff --check`; no runtime tests were needed. ### Was this patch authored or co-authored using generative AI tooling? Generated-by: OpenAI Codex (GPT-5) Closes #57501 from cloud-fan/agents-md-nested-instructions. Authored-by: Wenchen Fan <wenchen@databricks.com> Signed-off-by: Wenchen Fan <wenchen@databricks.com> (cherry picked from commit 160b619) Signed-off-by: Wenchen Fan <wenchen@databricks.com>
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What changes were proposed in this pull request?
Add project-instruction discovery guidance to the root
AGENTS.md. Agents should discover nestedAGENTS.mdfiles in the current directory and its ancestors, with more specific instructions takingprecedence for their directory scope.
Why are the changes needed?
Nested
AGENTS.mdfiles are a common pattern for providing subsystem-specific guidance. Spark isexpected to adopt this pattern soon, so the root instructions should define how agents discover and
prioritize those files consistently.
Does this PR introduce any user-facing change?
No.
How was this patch tested?
Documentation-only change. Verified with
git diff --check; no runtime tests were needed.Was this patch authored or co-authored using generative AI tooling?
Generated-by: OpenAI Codex (GPT-5)