clickhouse
https://github.com/clickhouse/clickhouse
C++
ClickHouse is a free analytics DBMS for big data
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- Issues
- Fix: disallow inf/NaN for Float64 in logical expressions (analyzer)
- Segfault in some query involving multiSearchFirstIndex
- Fix crash when calling some functions on const low-cardinality columns
- [RFC] Reduce lock contention for MergeTree tables (by renaming parts without holding lock)
- accurateCastOrDefault doesn't work with Array/Tuple/Map types
- When sharding by dictionary value, data is not (re)distributed as intended
- Wrong response to `/js/uplot.js` and `/js/lz-string.js` while NGINX proxying
- Endpoints for every ClickHouse version for testing
- SelectedRows and SelectedBytes metrics count INSERTed bytes too
- Unexpected Disorder in Query Result with UNION ALL
- Docs
- C++ not yet supported