clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Arrow format Logical error: 'Bad cast from type DB::DataTypeNullable to DB::DataTypeTuple'
- GROUP BY with ORDER BY and LIMIT performance optimization
- No such file or directory from KeeperAsynchronousMetrics
- Confusing messages in ClickHouse keeper logs when some wrong (non-raft) packets come to raft port
- distributed_ddl/ReplicatedMergeTree ALTER inconsistency
- Data duplication issue due to memory limit exceeded (Suspected)
- Lambda syntax regression in arrayMap function in ClickHouse 24.3
- Allow users to export xml config via clickhouse-extract-from-config
- Refreshable materialized views break restore
- Two level bloom filter index
- Docs
- C++ not yet supported