clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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Help out
- Issues
- Restore HDFS integration tests (it's trash, but there is a tiny chance we can handle it)
- Authorize the table engine's target on the initiator of an ON CLUSTER CREATE
- LIMIT BY blocks limit pushdown even when its keys match the sorting key and input is read in order (100x read amplification for top-N-with-dedup)
- Accept PromQL line comments at EOF
- Do not run the server-side AST fuzzer on the stress harness's own queries
- Do not inject random ORDER BY into queries planned to an intermediate stage
- CI: reclaim leftover docker images before Install packages installs
- Add spill support with a configurable in-memory buffer for packed part writes
- Introduce zk leader metrics to Keeper mntr
- Paimon tables with a nullable ARRAY or MAP column cannot be read: "Nested type ... cannot be inside Nullable type"
- Docs
- C++ not yet supported