clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Add system.filelog_files with the read state of each FileLog file
- Add filesystem cache efficiency metrics: active, passive and idle bytes
- Remove a rolled back transaction's parts from the active set even when their version metadata cannot be written
- Quantized Vector Search Rescoring Optimization
- Keeper log s3
- Simplified partition mutations
- Add decoded text index posting blocks of consecutive row ids to the bitmap as one range
- FileLog: required improvements for tailing rotated log files
- Account initial query contexts in MySQL, PostgreSQL, gRPC and Flight
- Support incremental rmv with DeltaLake
- Docs
- C++ not yet supported