[Aionw]

Description

Implements the async Store Python client slice of RFC #3534 Phase 2.

• Moves mooncake-integration/store/async_store.py to the canonical python/mooncake/async_store.py package source and removes the old tracked location.
• Moves the directly owned live-cluster test to python/tests/store/async_store_integration.py, updates its CI invocation, and adds mocked source-import and behavior tests that need no Store cluster.
• Updates direct CMake installation, the transitional legacy wheel builder, packaging invariants, installed-wheel smoke coverage, CODEOWNERS, and labeling for the canonical path.
• Preserves the public mooncake.async_store.MooncakeDistributedStoreAsync import and behavior. This does not rename the native Store extension, create the final Store facade, or migrate structured Store/services/config/buffer-pool code.

Overlap

• [Reshard] Migrate to unified Python package #3585 migrates Reshard and touches shared packaging/build metadata; this PR does not duplicate any Reshard source or tests.
• [Store] Migrate lightweight Python utilities to unified package #3586 migrates Store lightweight utilities/config and touches some of the same shared metadata files. This PR is limited to async_store.py and its directly owned tests, so the module changes are complementary even though a later rebase may be needed.
• [Store]Add async batch get interface #1861 and [Store] Dual rdma with coroutine te submit #3355 change native Store async/coroutine APIs, but neither owns or moves mooncake.async_store; this PR intentionally preserves current wrapper behavior.
• There is no async-client entry point or existing type-check path on main to relocate. The shared Python pyright configuration is separately owned by [Reshard] Migrate to unified Python package #3585 and is not duplicated here.

Module

• Transfer Engine (mooncake-transfer-engine)
• Mooncake Store (mooncake-store)
• Reshard (mooncake-reshard)
• Mooncake EP (mooncake-ep)
• Mooncake PG (mooncake-pg)
• Integration (mooncake-integration)
• P2P Store (mooncake-p2p-store)
• Python Wheel (mooncake-wheel)
• Common (mooncake-common)
• Mooncake RL (mooncake-rl)
• CI/CD
• Docs
• Other

Type of Change

• Bug fix
• New feature
• Refactor
• Breaking change
• Documentation update
• Performance improvement
• Other

How Has This Been Tested?

Test commands:

MOONCAKE_TEST_WHEEL=/absolute/path/to/dist/mooncake_transfer_engine-0.3.12.post1-cp310-cp310-linux_x86_64.whl \
  python -m pytest -q python/tests/store/test_async_store.py python/tests/packaging
python -m compileall -q python/mooncake/async_store.py \
  python/tests/store/async_store_integration.py python/tests/store/test_async_store.py
CMAKE_BUILD_PARALLEL_LEVEL=128 python -m build --wheel
python -m twine check dist/*.whl
git fetch origin main
pre-commit run --files $(git diff --name-only --diff-filter=ACMR origin/main...HEAD)

Test results:

• Unit tests pass: 9 focused source, behavior, packaging, and isolated installed-wheel tests passed.
• Integration tests pass (if applicable): the moved live-cluster script was not run locally because this environment has no running Store cluster; the existing CI job now invokes it from its canonical test location.
• Manual testing done: the root PEP 517 wheel build completed, twine check passed, and the wheel smoke test installed with --no-deps in a clean venv outside the repository.

Checklist

• I have performed a self-review of my own code
• I have formatted my code using ./scripts/code_format.sh (not applicable: no C/C++ files changed; all relevant pre-commit format hooks passed)
• I have run pre-commit on the files changed in this PR and all hooks pass
• I have updated the documentation (not applicable: imports and behavior are unchanged, and no directly relevant docs reference the old source path)
• I have added tests to prove my changes are effective
• For changes >500 LOC: I have filed RFC [RFC]: Unify Mooncake's Python package, build, and release architecture #3534

AI Assistance Disclosure

• No AI tools were used
• AI tools were used (specify below)

OpenAI Codex performed the scoped migration, updated build/packaging metadata, added tests, and ran the reported validation. The human submitter remains responsible for reviewing and defending every changed line.

[Icedcoco]

LGTM. The migration preserves the public import path and wrapper behavior, and the build and integration-test paths are updated consistently.

One non-blocking question: would it make sense to wire the new unit and packaging tests into CI here, or would you prefer to handle that as part of the broader packaging migration?

[Aionw]

When our release pipeline migrate to scikit-build-core, those test will be handled all at once. Icedcoco ***@***.***> 于2026年9月17日周四 16:26写道：

…

***@***.**** approved this pull request. LGTM. The migration preserves the public import path and wrapper behavior, and the build and integration-test paths are updated consistently. One non-blocking question: would it make sense to wire the new unit and packaging tests into CI here, or would you prefer to handle that as part of the broader packaging migration? — Reply to this email directly, view it on GitHub <#3624?email_source=notifications&email_token=AJ3VZW62KHJD52K7ECZQPHL5PON2DA5CNFSNUABKM5UWIORPF5TWS5BNNB2WEL2QOVWGYUTFOF2WK43UKJSXM2LFO4XTKMRTGMYDENJVGEY2M4TFMFZW63VGMF2XI2DPOKSWK5TFNZ2KYZTPN52GK4S7MNWGSY3L#pullrequestreview-5233025511>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AJ3VZW2UXY55LZ6NDXXTR6D5PON2DAVCNFSNUABFKJSXA33TNF2G64TZHM4DCOJXGMZTCNZTHNEXG43VMU5TKMRTGI3TINZVGI2KC5QC> . You are receiving this because you authored the thread.Message ID: <kvcache-ai/Mooncake/pull/3624/review/5233025511 ***@***.*** .com>

[Icedcoco]

LGTM