26.1 Antalya - Enabled experimental datalake catalogues by-default

[Enmk]

Changelog category (leave one):

• Improvement

Changelog entry (a user-readable short description of the changes that goes to CHANGELOG.md):

Enabled experimental datalake catalogues by-default

Documentation entry for user-facing changes

...

CI/CD Options

Exclude tests:

• Fast test
• Integration Tests
• Stateless tests
• Stateful tests
• Performance tests
• All with ASAN
• All with TSAN
• All with MSAN
• All with UBSAN
• All with Coverage
• All with Aarch64
• All Regression
• Disable CI Cache

Regression jobs to run:

• Fast suites (mostly <1h)
• Aggregate Functions (2h)
• Alter (1.5h)
• Benchmark (30m)
• ClickHouse Keeper (1h)
• Iceberg (2h)
• LDAP (1h)
• Parquet (1.5h)
• RBAC (1.5h)
• SSL Server (1h)
• S3 (2h)
• Tiered Storage (2h)

based on #1084

[github-actions]

Workflow [PR], commit [9277b23]

[CarlosFelipeOR]

QA Verification

Summary of changes

• Default values for the allow_*_database datalake catalog settings (Iceberg, Unity, Glue) were changed from false to true for Antalya.
• Changes applied in Settings.cpp and SettingsChangesHistory.cpp.

Verification performed

Check	Result
Manual verification – default values in system.settings	All related settings (main + aliases) show default: true
Fast test – settings history validation	Passed
CI status	Green

Notes

• SettingsChangesHistory.cpp correctly documents both the experimental and alias setting names for Antalya version 25.8.16.20001.altinityantalya.
• Remaining CI failure is tracked in PR #1390.

Verdict: Approved.