clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Better Event to monitor CH Keeper latency
- S3Queue table engine triggers the dependent Materialized View on insert of an empty block
- "any left join" and "left join" result in different dataset sizes even when the data in the right table is consistent.
- Data isn`t being inserted with using materialized view
- Can't drop MATERIALIZED VIEW for S3Queue table when host is incorrect (or service has not worked).
- Restore retries dns resolution infinitely after DNS_ERROR
- New JSON-type fuzzing proposal
- The implementation of ColumnConst::compareAt should be similar with ColumnSparse::compareAt
- Stateless test `02916_glogal_in_cancel` is rarely flaky with `DB::NetException: All attempts to get table structure failed`
- [WIP] Apply `preferred_block_size_bytes` and `preferred_max_column_in_block_size_bytes` settings for IRowInputFormat
- Docs
- C++ not yet supported