[NEW RBO] Wide channels.

[denis0x0D]

Changelog entry

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Changelog category

• Not for changelog (changelog entry is not required)

Description for reviewers

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[github-actions]

🟢 2026-01-28 15:46:55 UTC The validation of the Pull Request description is successful.

[ydbot]

Run Extra Tests

Run additional tests for this PR. You can customize:

• Test Size: small, medium, large (default: all)
• Test Targets: any directory path (default: ydb/)
• Sanitizers: ASAN, MSAN, TSAN
• Coredumps: enable for debugging (default: off)
• Additional args: custom ya make arguments

[github-actions]

⚪ 2026-01-28 15:47:40 UTC Pre-commit check linux-x86_64-relwithdebinfo for fc2e532 has started.
⚪ 2026-01-28 15:47:58 UTC Artifacts will be uploaded here
⚪ 2026-01-28 15:50:12 UTC ya make is running...
🟡 2026-01-28 17:43:57 UTC Some tests failed, follow the links below. Going to retry failed tests...

Details

Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
45061	41977	0	1	3049	34

⚪ 2026-01-28 17:44:15 UTC ya make is running... (failed tests rerun, try 2)
🟢 2026-01-28 17:51:15 UTC Tests successful.

Ya make output | Test bloat | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
584 (only retried tests)	572	0	0	0	12

🟢 2026-01-28 17:51:22 UTC Build successful.
🟢 2026-01-28 17:51:45 UTC ydbd size 2.4 GiB changed* by +26.1 KiB, which is < 100.0 KiB vs main: OK

ydbd size dash	main: 368a82a	merge: fc2e532	diff	diff %
ydbd size	2 527 424 336 Bytes	2 527 451 040 Bytes	+26.1 KiB	+0.001%
ydbd stripped size	536 257 576 Bytes	536 269 544 Bytes	+11.7 KiB	+0.002%

^{*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]

⚪ 2026-01-28 15:48:22 UTC Pre-commit check linux-x86_64-release-asan for fc2e532 has started.
⚪ 2026-01-28 15:48:38 UTC Artifacts will be uploaded here
⚪ 2026-01-28 15:50:48 UTC ya make is running...
🟡 2026-01-28 16:55:46 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?
14476	14370	0	67	10	29

🟢 2026-01-28 16:55:56 UTC Build successful.
🟢 2026-01-28 16:56:30 UTC ydbd size 3.9 GiB changed* by +45.2 KiB, which is < 100.0 KiB vs main: OK

ydbd size dash	main: 368a82a	merge: fc2e532	diff	diff %
ydbd size	4 156 471 672 Bytes	4 156 517 928 Bytes	+45.2 KiB	+0.001%
ydbd stripped size	1 554 793 712 Bytes	1 554 810 832 Bytes	+16.7 KiB	+0.001%

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

[ydbot]

Backport

To backport this PR, click the button next to the target branch and then click "Run workflow" in the Run Actions UI.

Branch	Run
stable-25-3, stable-25-3-1, stable-25-4, stable-25-4-1
stable-25-4, stable-25-4-1
stable-25-4