clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- WriteBuffer is neither finalized nor canceled in destructor
- NATS JetStream integration not working
- SHUFFLE
- always: DynamicQueryHandler: Code: 210. DB::NetException: Connection reset by peer, while writing to socket
- Redundant filter removal
- Parallelize `dictGetKeys` constant path and constant fold inverse dictionary lookup with `dictGetKeys`
- Vertical insert (batched column writes) for very wide MergeTree tables?
- Optimize `cramersV`, `cramersVBiasCorrected`, `theilsU`, and `contingency` when used with window functions
- Fix missing column when unusual identifier alias in JOIN with old analyzer
- HSE course work: feature/in filter operator
- Docs
- C++ not yet supported