clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Code: 49. DB::Exception: ReadBufferFromEncryptedFile
- 25.3.6.56 is slower than 24.8.8.17 and hits OOM in AggregatingTransform (Apple M3 Pro, macOS)
- 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
- HSE course work: feature/in filter operator
- Docs
- C++ not yet supported