clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Aggregate function states lose Nullable type after adding -If suffix
- DB::Exceptions after Clickhouse upgrade on the server start
- Add format JSONCompactWithoutMetadata
- Explain Blocked mutation
- Trace memory allocation in processors
- Clickhouse on ARM spams libunwind: Unsupported .eh_frame_hdr version to the stdout
- system.zookeeper have not any record for auxiliary zookeeper
- ClickHouse uses sipHash128 function for FixedStrings in uniqExact, which can cause 8-5 times grow in state size compared to raw data.
- Clickhouse server in docker stops listening HTTP port if gRPC port is specified
- MaterializedPostgreSQL engine type mapping for uint256
- Docs
- C++ not yet supported