clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Relax supportsPrewhere check for StorageMerge
- Add ability to rotate buffers layers instead of using N buffer layers in parallel
- Some stateless tests failed with timeout in debug build
- Server gets OOM-killed in performance comparison check
- How to use `YAMLRegExpTree` with XML configuration
- CPU hotspot on `ColumnString::index`
- Allow the current user to view their own grants from `system.grants` without assigning a specific privilege
- Need more metrics about Mark Cache eviction.
- Wrong result from LEFT JOIN with ON clause always TRUE
- Syntax error when the request sent by HTTP but OK by native protocol
- Docs
- C++ not yet supported