clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- S3Queue: `use_persistent_processing_nodes` is silently ignored and misreported; request an opt-out
- Stateless tests (amd_msan, WasmEdge, parallel, N/2) no longer fit the 9000s job budget: killed mid-suite with no failing test
- Backport #112594 to 26.3: Bump `simdjson` from v4.2.4 to v4.6.5
- Cherry pick #112604 to 25.8: Bump `arrow` to 25.0.0, `orc` to 2.3.1 and `xsimd` to 14.2.0
- Cherry pick #112604 to 26.3: Bump `arrow` to 25.0.0, `orc` to 2.3.1 and `xsimd` to 14.2.0
- Cherry pick #112604 to 26.5: Bump `arrow` to 25.0.0, `orc` to 2.3.1 and `xsimd` to 14.2.0
- 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"
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- C++ not yet supported