gripleaf opened a new pull request, #254:
URL: https://github.com/apache/paimon-cpp/pull/254
### Purpose
Linked issue: N/A
Make the oneTBB dependency configurable through `PAIMON_USE_TBB`.
- Keep TBB enabled by default to preserve existing behavior.
- Do not resolve, build, or link TBB when `PAIMON_USE_TBB=OFF`.
- Encapsulate TBB concurrent containers behind Paimon utility classes.
- Provide C++17 standard-library fallback implementations.
- Allow statically linked custom concurrent backends to register through
`ConcurrentBackendFactory`.
- Continue compiling and registering custom backends when TBB is enabled,
while the TBB implementation bypasses the factory.
- Remove exposed TBB types from the asynchronous key-value producer and
consumer.
### Tests
- Built `paimon_objlib`, `paimon_shared`, and `paimon_static` with
`PAIMON_USE_TBB=ON`.
- Built `paimon_objlib`, `paimon_shared`, and `paimon_static` with
`PAIMON_USE_TBB=OFF`.
- Ran concurrent bounded queue tests with TBB enabled and disabled.
- Ran concurrent hash map tests with TBB enabled and disabled.
- Verified that registered custom backends are selected when TBB is
disabled.
- Verified that registered custom backends are not created when TBB is
enabled.
- Ran pre-commit checks for all changed files.
- Ran `git diff --check`.
The complete `paimon-common-test` target could not be completed because of
a pre-existing Apache Arrow/Parquet `GetColumn` signature incompatibility
unrelated to this change.
### API and Format
This change does not affect the public API under `include/paimon/`.
It does not change the storage format or protocol.
The new concurrent container abstractions and backend factory are internal
utilities under `src/paimon/common/utils/`.
### Documentation
Updated `docs/source/building.rst` to document:
- The `PAIMON_USE_TBB` CMake option.
- Building Paimon without resolving or linking TBB.
- Custom concurrent backend registration.
- Static archive linker-retention requirements for registration objects.
### Generative AI tooling
Generated-by: OpenAI Codex (GPT-5)
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