clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Enable async insert by default
- Reading problems with local_blob_storage type
- Cannot convert NULL value to non-Nullable type - CANNOT_INSERT_NULL_IN_ORDINARY_COLUMN
- [WIP] Add check that columns passed to ColumnTuple have the same size
- Slow materialized view degrades latency of inserts not triggering it (24.1)
- Stream the content of the updated files in the S3Queue
- -Sparkbar as an aggregate functions combinator.
- Significant performance difference between '=' and IN operator
- Implement queue mode for MergeTree
- Allow usage of other operators to join tables - LIKE, <= for dates etc.
- Docs
- C++ not yet supported