clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Add `stable` state for pools and handle prefer stable pools logic for hedged requests.
- [WIP] Allow MySQL table engine and function to take a user's subsquery
- Push down `LIMIT` in queries to external databases when suitable
- SQS and Kinesis table engines
- Several `test_backup_restore_on_cluster` tests are broken
- Incorrect S3 metadata path resolution when config is populated in Iceberg REST catalog /v1/config response
- ClickBench Q1 analysis
- Clickhouse local not dictionary encoding LowCardinality column
- REPLACE TABLE fails with an exception
- ClickHouse query failed with non-retryable error: Attempt to read after eof: (while reading column metadata)
- Docs
- C++ not yet supported