clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Cherry pick #112604 to 26.6: Bump `arrow` to 25.0.0, `orc` to 2.3.1 and `xsimd` to 14.2.0
- Cherry pick #112604 to 26.7: Bump `arrow` to 25.0.0, `orc` to 2.3.1 and `xsimd` to 14.2.0
- Object-storage `local` metadata files are rewritten in place (O_TRUNC, no journal): a SIGKILL during a mutation clone or old-part cleanup loses a committed part's acked rows
- `optimize_inverse_dictionary_lookup` rewrite inside a correlated EXISTS makes decorrelation fail: 48 "Cannot decorrelate query, because 'DelayedCreatingSets' step is not supported"
- Aggregating over `x IN (subquery using shardNum())` from `remote()`/`Distributed` fails: 10 NOT_FOUND_COLUMN_IN_BLOCK — initiator and shard disagree on the `__set_` id
- Materialized CTE over Distributed: 49 LOGICAL_ERROR "Reading from materialized CTE before its materialization completed - DelayedPortsProcessor gate is missing" survives the #108924 fix
- Backport #111162 to 26.6: Don't copy the file-info manifest in BackupsWorker::writeBackupEntries
- Backport #111379 to 26.6: Fix misreporting of datalake catalog errors as missing tables
- Accept PromQL line comments at EOF
- Reject invalid PromQL Unicode surrogate escapes
- Docs
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