fix stream lookup square and add simple overload checker (#18922)

[gridnevvvit]

Changelog entry

fix low performance in stream lookup on many reads #19010
add simple overload logic #19011

Changelog category

• Bugfix

Description for reviewers

...

[github-actions]

⚪ 2025-05-29 12:14:01 UTC Pre-commit check linux-x86_64-release-asan for 8a953a7 has started.
⚪ 2025-05-29 12:14:26 UTC Artifacts will be uploaded here
⚪ 2025-05-29 12:17:28 UTC ya make is running...
🟡 2025-05-29 14:06:04 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet Going to retry failed tests...

Details

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
12233	12040	0	91	67	35

⚪ 2025-05-29 14:07:10 UTC ya make is running... (failed tests rerun, try 2)
🟡 2025-05-29 14:27:40 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet Going to retry failed tests...

Details

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
244 (only retried tests)	141	0	7	63	33

⚪ 2025-05-29 14:27:49 UTC ya make is running... (failed tests rerun, try 3)
🟡 2025-05-29 14:48:09 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?
130 (only retried tests)	34	0	7	56	33

🟢 2025-05-29 14:48:16 UTC Build successful.
🔴 2025-05-29 14:48:48 UTC ydbd size 3.6 GiB changed* by +2.7 MiB, which is >= 2.0 MiB vs stable-25-1: Alert

ydbd size dash	stable-25-1: 8b86cdb	merge: 8a953a7	diff	diff %
ydbd size	3 912 905 384 Bytes	3 915 692 864 Bytes	+2.7 MiB	+0.071%
ydbd stripped size	1 368 555 792 Bytes	1 369 458 096 Bytes	+881.2 KiB	+0.066%

^{*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]

🟢 2025-05-29 12:14:12 UTC The validation of the Pull Request description is successful.

[github-actions]

⚪ 2025-05-29 12:14:16 UTC Pre-commit check linux-x86_64-relwithdebinfo for 8a953a7 has started.
⚪ 2025-05-29 12:14:26 UTC Artifacts will be uploaded here
⚪ 2025-05-29 12:17:23 UTC ya make is running...
🟢 2025-05-29 13:49:00 UTC Tests successful.

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
19280	18007	0	0	1211	62

🟢 2025-05-29 13:50:32 UTC Build successful.
🟡 2025-05-29 13:50:51 UTC ydbd size 2.1 GiB changed* by +1.4 MiB, which is >= 100.0 KiB vs stable-25-1: Warning

ydbd size dash	stable-25-1: 8b86cdb	merge: 8a953a7	diff	diff %
ydbd size	2 249 320 056 Bytes	2 250 807 440 Bytes	+1.4 MiB	+0.066%
ydbd stripped size	476 028 280 Bytes	476 284 024 Bytes	+249.8 KiB	+0.054%

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