clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Flaky test: test_backup_restore_s3/test.py::test_backup_to_s3_different_credentials[data_file_name_from_first_file_name-native_multipart]
- system.tables -> engine_full for materialized view is empty after 24.7
- Dynamically select the number of streams for Merge table.
- Potential issue: inconsistent behavior for SYSTEM DROP DATABASE REPLICA when the target replica does not exist
- Potential issue: DELETE FROM statement requires ALTER UPDATE privilege, which is inconsistent with the documentation
- Type hints are not shown in the vertical format in Web UI
- System table `remote_data_paths` is undocumented
- Fix bug of text index direct-read optimization
- data deleted using lightweight_update mode are resurected after backup/restore
- Potential issue: CREATE USER OR REPLACE requires only CREATE USER privilege when replacing an existing user
- Docs
- C++ not yet supported