Summary:
Fixes three unrelated nightly/CI failures.
Makefile: 'make build_folly' was tripping the build-signature change check, causing the folly-flavored jobs (e.g. nightly clang-21 ASAN+UBSAN+folly, which runs 'make build_folly' then 'USE_FOLLY=1 ... make check') to abort with 'Build parameters changed since the last build'. build_folly only builds the external folly library under third-party/folly and never compiles RocksDB objects into OBJ_DIR, so it should not record or check a build signature; add it to BUILD_SIG_NONBUILD_GOALS alongside checkout_folly.
util/rate_limiter_test.cc: RateLimiterTest.Rate's minimum-rate assertion is timing-sensitive and flakes on the small/loaded ARM CI runners, which (unlike x86_64) can't reliably sustain the target rate. Extend the existing CI exemption with an ARM-only GITHUB_ACTIONS branch, preserving the check on x86_64.
tools/ldb_test.py: the list_live_files_metadata output includes the full DB path, and the unescaped-dot regex '\d+.sst' could match a <digit><char>sst run inside the random tempfile.mkdtemp suffix (drawn from [a-z0-9_]) that precedes the real filename, collapsing testMap to a single bogus key such as '8asst'. Require a literal '.sst'; temp-dir characters can never contain a dot, so only the real filename matches.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/14910
Test Plan:
- build_folly: confirmed 'make build_folly' no longer writes .build_signature and that BUILD_SIG_DO_BUILD resolves empty for that goal.
- rate_limiter_test: confirmed via the C preprocessor that x86_64 keeps the SANDCASTLE-only exemption while aarch64 selects the new GITHUB_ACTIONS branch.
- ldb_test: reproduced the collapse with a poisoned temp suffix (produces {'8asst': ['0', 'mycol2']}) and confirmed the escaped-dot regex yields the correct 4-entry map.
Reviewed By: mszeszko-meta
Differential Revision: D110405164
Pulled By: pdillinger
fbshipit-source-id: a9a73b7a717e726fdf79d7795f085f3dbede940e
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