Antalya 25.8: Remote initiator improvements 2

[ianton-ru]

Changelog category (leave one):

• Improvement

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

Use object_storage_remote_initiator without object_storage_cluster on initial node.

Documentation entry for user-facing changes

Solved #1607
Query with object_storage_remote_initiator and object_storage_remote_initiator_cluster can be executed, when object_storage_cluster setting is defined only on remote node.

SELECT * FROM datalake.`iceberg.table` SETTINGS object_storage_remote_initiator=1, object_storage_remote_initiator_cluster='swarm_external_name'

converted to

SELECT * FROM remote('random_node_from_swarm_external_name', iceberg(...))

Remote node random_node_from_swarm_external_name executes

SELECT* FROM iceberg(...)

as simple table function or as cluster table function depend on object_storage_cluster defined only on this node.

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)
• S3 Export (2h)
• Swarms (30m)
• Tiered Storage (2h)

[github-actions]

Workflow [PR], commit [70d4218]

[ianton-ru]

@codex review

[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. Can't wait for the next one!

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[arthurpassos]

To the limits of my knowledge, it looks ok

[arthurpassos]

I know it was already here, but is LOGICAL_ERROR a good pick? Wouldn't BAD_ARGUMENTS be better? I mean, if the error / empty cluster is a code error, then ok. But if it's a missing argument from the user, then we should change

[ianton-ru]

When user did not set cluster name, updateQueryForDistributedEngineIfNeeded must be called with make_cluster_function=false, this check is not executed in this case. It is a technical check to be sure I did not make mistake somewhere in code.

[alsugiliazova]

Verification report: Altinity/ClickHouse PR #1638

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Conclusion

PR is verified.

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CI on head 70d42186 — failures

PR test workflow (3 failed jobs, 93 success, 1 still in progress)

Check	Test FAIL on head	Class
Integration tests (amd_asan, flaky check)	test_s3_cluster::test_graceful_shutdown[3-5]	Pre-existing flake — exists since 2025-11-05; test_graceful_shutdown family has 52+ FAILs / 24 PRs / 90d. Caught by the dedicated "flaky check" job, expected behavior.
Stateless tests (amd_debug, parallel)	03211_nested_json_merges	Pre-existing flake — 16 FAILs / 7 PRs / 90d, unrelated to PR diff (JSON merges).
Stateless tests (amd_asan, distributed plan, parallel, 1/2)	(no test FAIL recorded)	Job-level error; rerun candidate.
Stateless tests (amd_asan, distributed plan, parallel, 2/2)	n/a — in progress / passing per user	—

Regression workflow (4 failed jobs)

Check	Top failure on PR-1638 builds	Baseline (30d, all PRs)	Class
RegressionTestsRelease / Common (settings) / settings	8 settings missing snapshots; 1 of them — object_storage_remote_initiator_cluster — is the new setting introduced by this PR	object_storage_remote_initiator_cluster: 144 OK / 57 Fail across all 25.8 builds	**PR-cause: need to update snapshot
RegressionTestsAarch64 / Common (settings) / settings	same	same	same
RegressionTestsRelease / Swarms / swarms	/swarms/feature/node failure/check restart swarm node, /swarms/feature/swarm joins	well-known broken/flaky swarms scenarios	Pre-existing
RegressionTestsAarch64 / Swarms / swarms	same	same	same
RegressionTestsAarch64 / SSLServer (3) / ssl_server_3	/ssl server/part 3/zookeeper/fips/* (FIPS / ZK ciphers)	recurrent across PRs	Pre-existing infra (FIPS ZK)