clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Support reading Iceberg v3 deletion vectors
- Flaky test: 02676_optimize_old_parts_replicated
- Flaky test: 03630_join_blocks_with_different_constness
- 26.3.13.31 not posted to packages.clickhouse.com/deb/
- Logical error "Stream ... variant_discr ... is not found" for a Dynamic column during merge (part written without `variant_discr`)
- Cherry pick #99122 to 25.8: Fix RBAC bypass for DESCRIBE/CREATE TABLE AS via table functions
- parallel_hash join algorithm does not support join conditions with multiple ORs
- grace_hash join algorithm does not support join conditions with multiple OR
- Interrupted local→S3 TTL move leaves an orphan part → infinite move-retry loop and unbounded S3 PutObject (Code 84 DIRECTORY_ALREADY_EXISTS at store root, zero-copy OFF)
- Performance regression with validated target revert: uniq_with_key query 3 on ARM
- Docs
- C++ not yet supported