clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Add leader election for non-replicated MergeTree on shared storage
- ClickHouse 26.3 fails to start when using `<rotation>daily</rotation>` in logger config
- accurateCastOrNull QBit->QBit with mismatched dimensions or element types throws instead of returning NULL
- Classify errors reported by a successful parallel replica queries as an internal errors and exclude them towards error quota
- Remove builds for Mac OS Intel
- `anyLastArray` - anyLast with empty arrays?
- Fix `tryGetTableMetadata` to catch all exception types
- Pass source row count as cardinality hint for first-run GROUP BY hash table pre-sizing
- Different predicate-push-down optimizations does not respect short-circuit
- Introduce max_query_size into KQL parser
- Docs
- C++ not yet supported