clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- keeper-bench: increase default znode name length
- Stress test segfault in `DB::MergeTreeDataPartWriterCompact::cancel()`
- Fix PREWHERE with IN subquery not using primary key for granule pruning
- RFC: Rewrite Performance Comparison Tests
- Fix flaky test 02044_url_glob_parallel timeout
- Fix read_stream_count_was_reduced flag leaking into downstream pipeline compositions
- Added Parquet Shredded VARIANT Support to ParquetReaderv3
- `L2Distance` returns squared L2 distance instead of Euclidean distance when rescoring optimization is active
- `predict_offset` parameter not stored in `AggregateFunctionTimeseriesBase` parameters — tables with `-State` become unloadable
- `timeSeriesDerivToGrid` with DateTime64 returns per-timestamp-unit slope instead of per-second derivative
- Docs
- C++ not yet supported