clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- OvercommitTracker: synchronously purge jemalloc dirty pages on successful kill
- Add `eval` table function
- Create system.iceberg_files table
- WASM UDF columnar_v1 wire format
- Geoparquet rowgroup pruning
- Kafka engine — zombie consumer-group sessions after ClickHouse restart block partition assignment
- Docs: document concurrent ALTER TABLE mutation restrictions and MATERIALIZE INDEX combining limitations
- Docs: clarify that MATERIALIZE COLUMN does not rebuild data skipping indexes
- kql_array_sort_asc wrong behavior
- Fuzzer: Logical error: Rows are not sorted with permutation, position A, previous_row index B, current_row index C
- Docs
- C++ not yet supported