clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- `is_local` is incorrectly initialized to false on Kubernetes
- Support generating a ddsketch binary
- avaliability zone detection (getRunningAvailabilityZone) may not work on aws sometimes
- data lost in clickhouse
- Incorrect User Memory Tracker statistics
- All Kafka table engine is not initialized
- getAggregatingProjectionInfo is slow
- Complex SQL queries may time out
- Incorrect behavior in indexOfAssumeSorted() for sorted array of low cardinality strings in MergeTree table engine
- No replica has part covering, and a merge is impossible: we didn't find a smaller part with the same min block
- Docs
- C++ not yet supported