clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Increase disks app interactive test command timeout
- Add setting to omit CSV quotes for date and time types
- Fix MarkCache entries never evicted after a part is moved or detached
- Wrong results: ORDER BY col DESC LIMIT 1 returns 0 rows — TopK granule skip-index (use_skip_indexes_for_top_k) ignores lightweight-delete mask and prunes the part with live top rows
- Add bound check for max_read_buffer_size
- FunctionsStress
- Make the `pointInPolygon` preprocessed polygon cache shared, bounded, and configurable
- Fix flaky test_mutation_with_broken_projection
- Add asynchronous metrics for executable UDF memory usage
- Fix wrong results from top-k granule skip index with lightweight deletes
- Docs
- C++ not yet supported