clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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Help out
- Issues
- Narrow marks before reading with Projection Index
- [WIP] Keeper: treat a batch of requests as one nuraft entry
- The error "Lost connection to Redis server" is reported when inserting large-scale data(more than 1000000) into the Redis engine.
- Push LIMIT down into FINAL merge algorithms for early termination
- Enable system.query_log in clickhouse-local via config file
- Add `CGroupMemoryInactiveFile` async metric for Kubernetes WSS correlation
- ON CLUSTER CREATE/DROP are slow/failing compared to running them on all hosts manually
- ClickHouse: MEMORY_LIMIT_EXCEEDED. jemalloc.resident 19.17GB, RES in top is 5GB
- Add FINAL BY syntax for coarse-grained merge in AggregatingMergeTree and SummingMergeTree
- ARRAY JOIN in Projection Index
- Docs
- C++ not yet supported