clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- fix getMonotonicityForRange() of toDayOfWeek for string arguments
- Add support sql construction `IS DISTINCT FROM (null-safe not equals comparison)`
- [RFC] Use parallel replicas to execute distributed queries without sharding
- replica stuck in ReadOnly State
- Request hangs: timeout and retries in AWSHttpResourceClient
- UNION ALL with nulls can lead to 'Block structure mismatch'
- [Umbrella] Projections Reliability Improvements
- Memory profiler that samples by bytes and doesn't need post-aggregation
- Impossible to build without RUST toolchain
- Introduce `ZOUTOFMEMORY` used when soft limit is reached in Keeper
- Docs
- C++ not yet supported