clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Incremental RMV limit rows/bytes per stream round
- Use SVE2 `MATCH` in `find_first_symbols` on AArch64
- Respect start_pos in countSubstrings
- Performance test `long_primary_key` is unstable on ARM: all three queries intermittently 25-40% slower in unrelated PRs
- Call Undo on Disk TX Interrupt
- [GPU] MergeTree compressed blocks reader
- Fix `NOT IN` over a `Bool` key dropping rows when the set holds an integer other than 0 or 1
- Make the Alias table engine use definer rights
- Do not wait for unused Parquet reads after `LIMIT` or a cancellation when reading from object storage
- Use the backup S3 retry settings for the destination of a restore fallback
- Docs
- C++ not yet supported