YQ-4859 fixed streaming queries creation without user token

[GrigoriyPA]

Changelog entry

Fixed streaming queries creation without user token

Changelog category

• Bugfix

Description for reviewers

Bugfix ticket: https://st.yandex-team.ru/YQ-4859

[github-actions]

⚪ 2025-11-04 09:36:57 UTC Pre-commit check linux-x86_64-release-asan for d35ba94 has started.
⚪ 2025-11-04 09:37:01 UTC Artifacts will be uploaded here
⚪ 2025-11-04 09:38:29 UTC ya make is running...
🟡 2025-11-04 11:53:46 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet

Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
15310	14658	0	313	299	40

🟢 2025-11-04 11:54:07 UTC Build successful.
🟢 2025-11-04 11:54:34 UTC ydbd size 3.8 GiB changed* by -32 Bytes, which is <= 0 Bytes vs main: OK

ydbd size dash	main: 802fb8a	merge: d35ba94	diff	diff %
ydbd size	4 068 675 512 Bytes	4 068 675 480 Bytes	-32 Bytes	-0.000%
ydbd stripped size	1 510 375 912 Bytes	1 510 375 656 Bytes	-256 Bytes	-0.000%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}

[github-actions]

⚪ 2025-11-04 09:36:58 UTC Pre-commit check linux-x86_64-relwithdebinfo for d35ba94 has started.
⚪ 2025-11-04 09:37:02 UTC Artifacts will be uploaded here
⚪ 2025-11-04 09:38:25 UTC ya make is running...
🟡 2025-11-04 11:00:46 UTC Some tests failed, follow the links below. Going to retry failed tests...

Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
31439	29996	0	11	1400	32

⚪ 2025-11-04 11:00:57 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-11-04 11:08:17 UTC Tests successful.

Ya make output | Test bloat | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
94 (only retried tests)	81	0	0	0	13

🟢 2025-11-04 11:08:19 UTC Build successful.
🟢 2025-11-04 11:08:36 UTC ydbd size 2.3 GiB changed* by -592 Bytes, which is <= 0 Bytes vs main: OK

ydbd size dash	main: 802fb8a	merge: d35ba94	diff	diff %
ydbd size	2 429 287 080 Bytes	2 429 286 488 Bytes	-592 Bytes	-0.000%
ydbd stripped size	516 135 944 Bytes	516 135 880 Bytes	-64 Bytes	-0.000%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}

[Copilot]

Pull Request Overview

This PR refactors user token handling to make authentication optional throughout the KQP (Kernel Query Processor) system, allowing queries to execute without authentication when no user token is provided.

• Conditionally sets user tokens only when UserSID is present
• Removes authentication requirements from test query clients
• Simplifies token handling by removing serialization helpers

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
ydb/tests/tools/kqprun/src/ydb_setup.cpp	Adds conditional check to only set user token when UserSID is provided
ydb/core/kqp/ut/scheme/kqp_scheme_ut.cpp	Removes BUILTIN_ACL_ROOT authentication tokens from test query clients
ydb/core/kqp/gateway/behaviour/streaming_query/queries.cpp	Refactors user token handling to make it optional and simplifies token serialization logic

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[github-actions]

🟢 2025-11-04 09:39:20 UTC The validation of the Pull Request description is successful.

[github-actions]

⚪ 2025-11-06 08:15:17 UTC Pre-commit check linux-x86_64-release-asan for cd28457 has started.
⚪ 2025-11-06 08:15:35 UTC Artifacts will be uploaded here
⚪ 2025-11-06 08:17:54 UTC ya make is running...
🟡 2025-11-06 10:22:50 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet

Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
15389	14874	0	206	277	32

🟢 2025-11-06 10:23:07 UTC Build successful.
🟡 2025-11-06 10:23:35 UTC ydbd size 3.8 GiB changed* by +907.9 KiB, which is >= 100.0 KiB vs main: Warning

ydbd size dash	main: 759a759	merge: cd28457	diff	diff %
ydbd size	4 070 068 208 Bytes	4 070 997 912 Bytes	+907.9 KiB	+0.023%
ydbd stripped size	1 510 830 024 Bytes	1 511 061 064 Bytes	+225.6 KiB	+0.015%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}

[github-actions]

⚪ 2025-11-06 08:16:02 UTC Pre-commit check linux-x86_64-relwithdebinfo for cd28457 has started.
⚪ 2025-11-06 08:16:20 UTC Artifacts will be uploaded here
⚪ 2025-11-06 08:18:42 UTC ya make is running...
🟡 2025-11-06 09:40:17 UTC Some tests failed, follow the links below. Going to retry failed tests...

Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
31511	30097	0	3	1385	26

⚪ 2025-11-06 09:40:38 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-11-06 09:49:01 UTC Tests successful.

Ya make output | Test bloat | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
56 (only retried tests)	42	0	0	0	14

🟢 2025-11-06 09:49:11 UTC Build successful.
🟡 2025-11-06 09:49:30 UTC ydbd size 2.3 GiB changed* by +603.7 KiB, which is >= 100.0 KiB vs main: Warning

ydbd size dash	main: bbeaaf5	merge: cd28457	diff	diff %
ydbd size	2 430 066 440 Bytes	2 430 684 632 Bytes	+603.7 KiB	+0.025%
ydbd stripped size	516 259 464 Bytes	516 329 288 Bytes	+68.2 KiB	+0.014%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}