clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Remove `ConstStoragePtr` from the `MergeTreeData::SnapshotData`
- MaterializedPostgreSQL drops existing publication when multiple ClickHouse databases use the same Postgres DB
- Logical error: Unexpected return type from A. Expected B. Got C. Action: (STID: 1611-3d19)
- Nested EXISTS with deep correlated reference to outer JOIN table fails with NOT_FOUND_COLUMN_IN_BLOCK
- CPU Slot Over-provisioning in Workload Scheduling
- `GLOBAL RIGHT OUTER JOIN` on Distributed tables duplicates unmatched rows across shards without diagnostics
- Error in play: Unexpected end of JSON input. in case of query exception
- `SELECT *` with ANTI/SEMI JOIN incorrectly includes columns from the right table
- Flaky test: 01076_parallel_alter_replicated_zookeeper
- Optimize ReplicatedMergeTree queue locks for readonly operations on tables with mutations
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