clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Implement a sorting queue using a loser tree to improve merge sort performance
- Add replica_host configuration for DatabaseReplicated
- Protobuf input_format_protobuf_oneof_presence duplicates rows causing LOGICAL_ERROR
- Support hard links in the disks with `plain_rewritable` metadata
- Optimize KeyCondition for long Primary Keys and for high-cardinality Primary Keys
- Try using optimised hex encode and decode for `hex`
- fix possible crash with filesystem_cache_boundary_alignment
- Supports automatically fill on cluster value
- fix: some quantiles funcs return Date/DateTime when input type is Date/DateTime
- Pretty print for clickhouse-extract-from-config
- Docs
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