clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- <Error> executeQuery: Code: 999. Coordination::Exception: ... node doesn't exist. (KEEPER_EXCEPTION) (version 24.1.1.2048 (official build))
- Client behaves unexpectedly if you paste SQL with endline after semicolon
- partial function application and function pipelining
- IN clause with CTE and replicated table with 1 shard fails
- Compressed dictionaries inside of LowCardinality. WIP
- [Draft] Integration with XGBoost and LightGBM
- engine=Kafka Support for IAM auth for MSK (via SASL_OAUTHBEARER)
- avgWeighted rounds float value when weight is int
- Stress tests: Column X Int32 query tree node does not have valid source node
- `system.s3queue` is slow, consumes a lot of memory, and the underlying container grows infinitely, and the code lacks comments
- Docs
- C++ not yet supported