clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- 01660_system_parts_smoke fails with Bad get: has `Int128`, requested `UInt128`
- Text index: every query re-resolves each index substream by stat-ing the filesystem once per part, although the part already holds the name and size in its checksums; count() with one hasToken needle over 400 parts drops 41 ms to 27 ms
- Async INSERT into DeltaLake with wait_for_async_insert=0 is acknowledged when allow_delta_lake_writes=0, rows silently dropped at flush
- Parallel replicas reject FULL/PASTE JOIN against non-MergeTree side (code 264)
- Fix a `set` skip index over a `Dynamic` or `Variant` expression dropping every granule
- `PullingAsyncPipelineExecutor::cancel` / `max_execution_time` / `KILL QUERY` waits for the full S3 retry budget on a stuck S3 source
- Iceberg: emit catalog labels from the embedded Iceberg REST catalog
- Repeated `INTERPOLATE` target: `interpolate_columns` OOB aborts the server
- `any` with a bare select argument still formats to the `IN` quantifier
- Parallel replicas INSERT SELECT into a DeltaLake table commits once per replica: commit conflict, lost or partial data
- Docs
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