clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Adding RowBinaryWithNamesAndTypesAndDefaults
- Signal description: Segmentation fault
- Fix Keeper config restore after compacted rollback
- Fix `Template` recovery after skipped bad rows
- `DB::finalizeChunk` mutates `ColumnAggregateFunction` columns while still aliased by downstream stages / threads — root cause for #102460 (caught by TSan / ASan / MSan)
- SEGV in `UniquesHashSet::merge` ← `ColumnAggregateFunction::ensureOwnership` ← `MergeSorter::mergeBatchImpl` when sorting aggregate-state column from `WITH ROLLUP WITH TOTALS` (5-line standalone repro)
- Bound prefetch look-ahead by key_end in Aggregator when all keys are const
- compareTrackAt for FixedString
- compareTrackAt for ColumnConst
- Fix server crash in -State aggregate combinators with WITH ROLLUP/CUBE/TOTALS + ORDER BY
- Docs
- C++ not yet supported