clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Test: merge memory is not bounded by max_memory_usage (merge OOM repro)
- Prune named-Tuple subfields whose values are all type-defaults at INSERT and merge
- Slightly optimize JSON typed paths default insertion during INSERT
- Read the smallest on-disk column when a query reads no columns
- Local-primary cloud-backed disk for MergeTree using ephemeral SSD plus object-storage mirror
- Add s3_upload_checksum_algorithm setting
- Add setting to omit CSV quotes for date and time types
- Fix MarkCache entries never evicted after a part is moved or detached
- Fix flaky test 02770_async_buffer_ignore
- Make ALTER MODIFY COLUMN on named Tuple metadata-only when adding subfields
- Docs
- C++ not yet supported