clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Text index direct read drops the source column another PREWHERE step needs: NOT_FOUND_COLUMN_IN_BLOCK on a valid query
- Add spill support with a configurable in-memory buffer for packed part writes
- Record UNIQUE KEY dense index SST in part checksums
- Upgrade mongo-cxx-driver to 4.5.0 and use public metadata API
- Backport #113089 to 26.5: A dummy PR to backport
- Introduce zk leader metrics to Keeper mntr
- Paimon tables with a nullable ARRAY or MAP column cannot be read: "Nested type ... cannot be inside Nullable type"
- max_memory_usage_for_user MemoryTracker leaks during hanging mutations and OPTIMIZE queries
- Backport #110739 to 26.6: Resolve JOIN USING identifier from aliases nested in the SELECT list
- Clarify Iceberg catalog settings belong on DataLakeCatalog
- Docs
- C++ not yet supported