[YQ-4797] Watermark: RD: reduce CPU consumption, fix (#27563)

[APozdniakov]

Changelog entry

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Changelog category

• New feature
• Experimental feature
• Improvement
• Performance improvement
• User Interface
• Bugfix
• Backward incompatible change
• Documentation (changelog entry is not required)
• Not for changelog (changelog entry is not required)

Description for reviewers

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[github-actions]

⚪ 2025-10-25 19:56:50 UTC Pre-commit check linux-x86_64-release-asan for 95f60ee has started.
⚪ 2025-10-25 19:57:04 UTC Artifacts will be uploaded here
⚪ 2025-10-25 19:59:52 UTC ya make is running...
🟡 2025-10-25 21:25:17 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet Going to retry failed tests...

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
12646	12497	0	77	49	23

⚪ 2025-10-25 21:26:25 UTC ya make is running... (failed tests rerun, try 2)
🟡 2025-10-25 21:56:01 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet Going to retry failed tests...

Test history | Ya make output | Test bloat | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
1326 (only retried tests)	1237	0	41	26	22

⚪ 2025-10-25 21:56:15 UTC ya make is running... (failed tests rerun, try 3)
🟡 2025-10-25 22:20:41 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet

Test history | Ya make output | Test bloat | Test bloat | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
650 (only retried tests)	570	0	45	13	22

🟢 2025-10-25 22:20:50 UTC Build successful.

[github-actions]

⚪ 2025-10-25 19:58:36 UTC Pre-commit check linux-x86_64-relwithdebinfo for 95f60ee has started.
⚪ 2025-10-25 19:58:52 UTC Artifacts will be uploaded here
⚪ 2025-10-25 20:01:36 UTC ya make is running...
🟡 2025-10-25 21:11:03 UTC Some tests failed, follow the links below. Going to retry failed tests...

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
27217	24541	0	6	2637	33

⚪ 2025-10-25 21:13:20 UTC ya make is running... (failed tests rerun, try 2)
🟡 2025-10-25 21:45:33 UTC Some tests failed, follow the links below. Going to retry failed tests...

Test history | Ya make output | Test bloat | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
172 (only retried tests)	129	0	6	10	27

⚪ 2025-10-25 21:45:42 UTC ya make is running... (failed tests rerun, try 3)
🔴 2025-10-25 22:09:45 UTC Some tests failed, follow the links below.

Test history | Ya make output | Test bloat | Test bloat | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
151 (only retried tests)	119	0	6	0	26

🟢 2025-10-25 22:09:52 UTC Build successful.