clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- `output_format_orc_writer_time_zone_name` causes DateTime64 timestamp corruption due to double UTC conversion
- RFC: Named Scalars
- [deepsec] MultipleAccessStorage::moveAccessEntities: broken rollback + error loss during unwind + unused move_mutex
- [deepsec] AccessRights correctness: latent template-dispatch drop, dumpNodes null deref, dumpTree typo, equality ignores filter
- [deepsec] SettingsProfilesCache: dangling default_profile_id + stale cache on setDefaultProfileName + non-deterministic profile order
- [deepsec] ContextAccess / EnabledRoles / AccessChangesNotifier: data races and invalidated-iterator capture
- `setScale` error message uses member variable `scale` instead of parameter `scale_`, showing 0 instead of actual invalid value
- REPLACE PARTITION FROM leaves partial state in destination after mid-rename crash
- Normal projections (ORDER BY) ignore `_row_exists` filter during LWD rebuild because `FetchColumns` stage skips WHERE execution
- DROP DATABASE is not crash-atomic: partial cascade leaves database with some tables removed
- Docs
- C++ not yet supported