clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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Help out
- Issues
- add tsa annotation to column sizes and indexes around lazy evaluation
- Compressed data is decompressed repeatedly for a single query
- add new system.zookeeper_watches table
- Re-resolve function types in buildFilterActionsDAG when argument types change during filter pushdown through JOIN
- Check session settings in create queries when engine itself supports settings
- Add query plan cache for SELECT queries
- CAST mutation protection
- Fix N+1 `HeadObject` calls for S3 brace-expansion globs
- Create replicated database by default
- Avoid thundering herd effect in the query result cache
- Docs
- C++ not yet supported