25-3-1: Fix bug with partition count

[stanislav-shchetinin]

Changelog entry

#25524

Changelog category

• Bugfix

Description for reviewers

...

[github-actions]

🟢 2025-09-23 18:00:08 UTC The validation of the Pull Request description is successful.

[github-actions]

⚪ 2025-09-23 17:57:45 UTC Pre-commit check linux-x86_64-release-asan for 66d753f has started.
⚪ 2025-09-23 17:58:30 UTC Artifacts will be uploaded here
⚪ 2025-09-23 18:02:45 UTC ya make is running...
🟡 2025-09-23 19:55:23 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?
15496	15076	0	132	250	38

🟢 2025-09-23 19:56:43 UTC Build successful.
🟢 2025-09-23 19:57:06 UTC ydbd size 3.8 GiB changed* by +7.8 KiB, which is < 100.0 KiB vs stable-25-3-1: OK

ydbd size dash	stable-25-3-1: caaa726	merge: 66d753f	diff	diff %
ydbd size	4 043 468 184 Bytes	4 043 476 144 Bytes	+7.8 KiB	+0.000%
ydbd stripped size	1 506 303 360 Bytes	1 506 308 864 Bytes	+5.4 KiB	+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]

⚪ 2025-09-23 17:58:25 UTC Pre-commit check linux-x86_64-relwithdebinfo for 66d753f has started.
⚪ 2025-09-23 17:58:40 UTC Artifacts will be uploaded here
⚪ 2025-09-23 18:02:25 UTC ya make is running...
🟡 2025-09-23 19:26:11 UTC Some tests failed, follow the links below. Going to retry failed tests...

Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
38146	35451	0	2	2652	41

⚪ 2025-09-23 19:29:30 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-09-23 19:43:09 UTC Tests successful.

Ya make output | Test bloat | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
263 (only retried tests)	239	0	0	1	23

🟢 2025-09-23 19:43:17 UTC Build successful.
🟢 2025-09-23 19:43:35 UTC ydbd size 2.3 GiB changed* by +4.0 KiB, which is < 100.0 KiB vs stable-25-3-1: OK

ydbd size dash	stable-25-3-1: caaa726	merge: 66d753f	diff	diff %
ydbd size	2 430 353 352 Bytes	2 430 357 424 Bytes	+4.0 KiB	+0.000%
ydbd stripped size	520 686 728 Bytes	520 687 240 Bytes	+512 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}