---
model: gpt-5.6-sol
provider: openai
service: opencode
timestamp: 2026-07-27T20:47:11Z
git_ref: 84a6d47b
diff_cmd: git diff HEAD~1..HEAD
---

> `git diff HEAD~1..HEAD -- piker/storage/nativedb.py`

Removed actor-local and filesystem writer locks from NativeDB. The
persistent `datad` feed task already owns writes for each series, while
its timeframe children write distinct files. NativeDB retains validated
temporary writes, file and directory synchronization, and atomic target
replacement for crash durability. The exact `.parquet` suffix filter is
retained so legacy lock sidecars are harmless.

> `git diff HEAD~1..HEAD -- tests/test_storage_nativedb.py`

Removed the synthetic cross-client lock-contention test. Added regression
coverage proving replacement and incremental writes create no lock
sidecars. Extended indexing coverage with the legacy
`.parquet.lock` artifact that caused upstream `flake_update` to crash.

Verification generated with the patch:

- NativeDB and history regression set: 20 passed
- Ruff: passed
- `git diff --check`: passed