Fixed an error in calculating metrics in the PQ tablet (#29321)

[nshestakov]

Changelog entry

Fixed an error in calculating metrics in the PQ tablet, as a result of which the resource usage was incorrectly determined, which led to unnecessary balancing of tablets.

Changelog category

• Bugfix

Description for reviewers

LOGBROKER-10121

[github-actions]

🟢 2025-11-26 11:12:25 UTC The validation of the Pull Request description is successful.

[github-actions]

⚪ 2025-11-26 11:13:03 UTC Pre-commit check linux-x86_64-relwithdebinfo for fc36875 has started.
⚪ 2025-11-26 11:13:07 UTC Artifacts will be uploaded here
⚪ 2025-11-26 11:16:15 UTC ya make is running...
🔴 2025-11-26 11:22:22 UTC Build failed, see the logs. Also see fail summary

[github-actions]

⚪ 2025-11-26 11:13:25 UTC Pre-commit check linux-x86_64-release-asan for fc36875 has started.
⚪ 2025-11-26 11:13:42 UTC Artifacts will be uploaded here
⚪ 2025-11-26 11:16:51 UTC ya make is running...
🔴 2025-11-26 11:27:27 UTC Build failed, see the logs. Also see fail summary

[github-actions]

⚪ 2025-11-26 12:06:49 UTC Pre-commit check linux-x86_64-release-asan for d18f2ca has started.
⚪ 2025-11-26 12:07:29 UTC Artifacts will be uploaded here
⚪ 2025-11-26 12:11:10 UTC ya make is running...
🟡 2025-11-26 13:24:37 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?
14639	14474	0	25	108	32

⚪ 2025-11-26 13:25:51 UTC ya make is running... (failed tests rerun, try 2)
🟡 2025-11-26 13:43:20 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?
203 (only retried tests)	169	0	1	3	30

⚪ 2025-11-26 13:43:29 UTC ya make is running... (failed tests rerun, try 3)
🟢 2025-11-26 14:01:54 UTC Tests successful.

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
63 (only retried tests)	32	0	0	1	30

🟢 2025-11-26 14:02:01 UTC Build successful.
🟢 2025-11-26 14:02:25 UTC ydbd size 3.8 GiB changed* by +120 Bytes, which is < 100.0 KiB vs stable-25-2-1: OK

ydbd size dash	stable-25-2-1: 6df892b	merge: d18f2ca	diff	diff %
ydbd size	4 050 443 264 Bytes	4 050 443 384 Bytes	+120 Bytes	+0.000%
ydbd stripped size	1 409 821 816 Bytes	1 409 823 352 Bytes	+1.5 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]

⚪ 2025-11-26 12:07:19 UTC Pre-commit check linux-x86_64-relwithdebinfo for d18f2ca has started.
⚪ 2025-11-26 12:07:33 UTC Artifacts will be uploaded here
⚪ 2025-11-26 12:10:42 UTC ya make is running...
🟡 2025-11-26 13:36:47 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?
35725	33200	0	5	2471	49

⚪ 2025-11-26 13:39:46 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-11-26 13:52:30 UTC Tests successful.

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
102 (only retried tests)	62	0	0	2	38

🟢 2025-11-26 13:52:37 UTC Build successful.
🟢 2025-11-26 13:52:57 UTC ydbd size 2.2 GiB changed* by -4.4 KiB, which is <= 0 Bytes vs stable-25-2-1: OK

ydbd size dash	stable-25-2-1: 6df892b	merge: d18f2ca	diff	diff %
ydbd size	2 327 293 368 Bytes	2 327 288 872 Bytes	-4.4 KiB	-0.000%
ydbd stripped size	487 664 616 Bytes	487 664 232 Bytes	-384 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}