clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- clickhouse starts with readonly table without try to fix it and reports ReplicasMaxAbsoluteDelay / ReadonlyReplica incorrectly
- Invalid sort order after materialize column
- Treating `modification_time` as part age has undesirable consequences
- [WIP] Try to support nullable complex types such as Tuple/Array/Map
- Using RabbitMQ Engine, CPU load is very high
- Unexpected behaviour when querying a dictionary: Update failed for dictionary
- allow using variable when calling catboostEvaluate
- Full table scan on query over indexed string field with logical or condition
- Out of memory issues with bad query.
- max_size_to_run_optimize (limiter for optimize_table command)
- Docs
- C++ not yet supported