clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Tune the value of `min_marks_for_concurrent_read` to get better performance
- Multiple "Code: 1000, e.code() = 0, Not found" errors on start of ClickHouse server, but instance runs fine
- fix: protobuf: serde: exception bypass for canonical repeated nested
- Minor change in ReadBufferFromRemoteFSGather
- Nested columns sizes are inconsistent
- Fix: max_execution_timeout_leaf with parallel replicas
- Function arrayDistinct could not process null elements in array
- `Distributed` tables always write data directly to local filesystem ignoring actual disk type
- Increase the threshold of smt/none_smt to improve the performance
- Change in `arrayJoin` and `ROW_NUMBER` behaviour
- Docs
- C++ not yet supported