clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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Help out
- Issues
- Fix a data race on the gRPC output buffer with the `Pretty` squash thread
- Iceberg tables are much slower than MergeTree in the performance tests: subcolumns, sort order, join planning, position deletes
- Fix ZNONODE race when reading StorageKafka2 topic partition locks
- enable `query_masking_rules` in DDL statements
- Read Parquet files with data pages that have no values
- Iceberg REST Catalog: Add warehouse support (part 1)
- Track used skip indices in query log
- Qualify table function arguments sent to parallel replicas
- Fix a web terminal query that failed on the client side staying in `system.processes`
- Stop the other S3 reads of a failed merge or mutation
- Docs
- C++ not yet supported