Set ScanFetcher Inflight (number of CS to read in parallel) to 2

[Hor911]

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

...

[github-actions]

🟢 2025-03-20 14:23:59 UTC The validation of the Pull Request description is successful.

[github-actions]

⚪ 2025-03-20 14:28:50 UTC Pre-commit check linux-x86_64-release-asan for 5063576 has started.
⚪ 2025-03-20 14:29:05 UTC Artifacts will be uploaded here
⚪ 2025-03-20 14:31:55 UTC ya make is running...
🟡 2025-03-20 15:38:37 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?
12018	11931	0	37	15	35

⚪ 2025-03-20 15:39:47 UTC ya make is running... (failed tests rerun, try 2)
🟡 2025-03-20 15:57:32 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?
125 (only retried tests)	88	0	1	4	32

⚪ 2025-03-20 15:57:41 UTC ya make is running... (failed tests rerun, try 3)
🟡 2025-03-20 16:09:50 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?
64 (only retried tests)	28	0	1	3	32

🟢 2025-03-20 16:10:04 UTC Build successful.
🟢 2025-03-20 16:10:36 UTC ydbd size 3.8 GiB changed* by -96 Bytes, which is <= 0 Bytes vs main: OK

ydbd size dash	main: 00995cf	merge: 5063576	diff	diff %
ydbd size	4 071 958 816 Bytes	4 071 958 720 Bytes	-96 Bytes	-0.000%
ydbd stripped size	1 408 718 408 Bytes	1 408 718 344 Bytes	-64 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}

[github-actions]

⚪ 2025-03-20 15:04:06 UTC Pre-commit check linux-x86_64-relwithdebinfo for 5063576 has started.
⚪ 2025-03-20 15:04:11 UTC Artifacts will be uploaded here
⚪ 2025-03-20 15:07:06 UTC ya make is running...
🟡 2025-03-20 16:01:08 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?
19305	17933	0	5	1256	111

⚪ 2025-03-20 16:02:53 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-03-20 16:20:38 UTC Tests successful.

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
187 (only retried tests)	79	0	0	2	106

🟢 2025-03-20 16:20:48 UTC Build successful.
🟢 2025-03-20 16:21:06 UTC ydbd size 2.2 GiB changed* by 0 Bytes, which is <= 0 Bytes vs main: OK

ydbd size dash	main: 00995cf	merge: 5063576	diff	diff %
ydbd size	2 313 317 144 Bytes	2 313 317 144 Bytes	0 Bytes	0.000%
ydbd stripped size	484 266 592 Bytes	484 266 592 Bytes	0 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}