clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Periodically facing "Memory limit exceeded" when the ClickHouse flushes the data to the system.*_log tables
- The clickhouse service cannot restart the policy because the table does not exist
- Add argMaxMany(N) and argMinMany(N) aggregate functions
- Assertion `(n >= (static_cast<ssize_t>(pad_left_) ? -1 : 0)) && (n <= static_cast<ssize_t>(this->size()))` in `PODArray`
- Fix cardinality underestimation when join column NDVs are unknown
- Add LOOKUP INDEX support for MergeTree
- AWS Kinesis table engine
- Add functions for content-defined-chuncking
- Add Sparkbar aggregate function combinator
- Add geo aggregate functions #80186
- Docs
- C++ not yet supported