introduce snapshot_ro isolation level

[ssmike]

Changelog entry

#10907 Don't take locks in ShapshotReadOnly

Changelog category

• Improvement

[github-actions]

⚪ 2024-10-30 06:36:28 UTC Pre-commit check linux-x86_64-release-asan for 175aabd has started.
⚪ 2024-10-30 06:36:39 UTC Artifacts will be uploaded here
⚪ 2024-10-30 06:39:58 UTC ya make is running...
🟡 2024-10-30 08:18:23 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
10694	10568	0	73	19	34

🟢 2024-10-30 08:19:17 UTC Build successful.
🟢 2024-10-30 08:19:48 UTC ydbd size 5.7 GiB changed* by +4.0 KiB, which is < 100.0 KiB vs main: OK

ydbd size dash	main: e3bfd65	merge: 175aabd	diff	diff %
ydbd size	6 147 831 552 Bytes	6 147 835 616 Bytes	+4.0 KiB	+0.000%
ydbd stripped size	1 534 206 192 Bytes	1 534 210 224 Bytes	+3.9 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]

⚪ 2024-10-30 06:38:44 UTC Pre-commit check linux-x86_64-relwithdebinfo for 175aabd has started.
⚪ 2024-10-30 06:38:55 UTC Artifacts will be uploaded here
⚪ 2024-10-30 06:42:19 UTC ya make is running...
🟡 2024-10-30 08:12:14 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?
41636	35905	0	11	5621	99

⚪ 2024-10-30 08:15:49 UTC ya make is running... (failed tests rerun, try 2)
🟡 2024-10-30 08:27:36 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?
187 (only retried tests)	91	0	4	0	92

⚪ 2024-10-30 08:27:44 UTC ya make is running... (failed tests rerun, try 3)
🔴 2024-10-30 08:39:30 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?
96 (only retried tests)	0	0	4	0	92

🟢 2024-10-30 08:39:37 UTC Build successful.
🟢 2024-10-30 08:40:04 UTC ydbd size 2.8 GiB changed* by 0 Bytes, which is <= 0 Bytes vs main: OK

ydbd size dash	main: e3bfd65	merge: 175aabd	diff	diff %
ydbd size	3 038 244 552 Bytes	3 038 244 552 Bytes	0 Bytes	0.000%
ydbd stripped size	481 263 544 Bytes	481 263 544 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}

[github-actions]

⚪ 2024-10-31 11:48:44 UTC Pre-commit check linux-x86_64-relwithdebinfo for 6c488f5 has started.
⚪ 2024-10-31 11:48:56 UTC Artifacts will be uploaded here
⚪ 2024-10-31 11:52:19 UTC ya make is running...
🟡 2024-10-31 13:19:22 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?
41697	36054	0	3	5546	94

⚪ 2024-10-31 13:23:31 UTC ya make is running... (failed tests rerun, try 2)
🟢 2024-10-31 13:35:09 UTC Tests successful.

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
96 (only retried tests)	7	0	0	0	89

🟢 2024-10-31 13:35:22 UTC Build successful.
🟢 2024-10-31 13:35:44 UTC ydbd size 2.8 GiB changed* by 0 Bytes, which is <= 0 Bytes vs main: OK

ydbd size dash	main: 55a88ca	merge: 6c488f5	diff	diff %
ydbd size	3 039 299 072 Bytes	3 039 299 072 Bytes	0 Bytes	0.000%
ydbd stripped size	481 329 016 Bytes	481 329 016 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}

[github-actions]

⚪ 2024-10-31 11:48:59 UTC Pre-commit check linux-x86_64-release-asan for 6c488f5 has started.
⚪ 2024-10-31 11:49:10 UTC Artifacts will be uploaded here
⚪ 2024-10-31 11:52:34 UTC ya make is running...
🟡 2024-10-31 13:28:45 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
10674	10557	0	35	50	32

🟢 2024-10-31 13:29:59 UTC Build successful.
🟢 2024-10-31 13:30:33 UTC ydbd size 5.7 GiB changed* by -32 Bytes, which is <= 0 Bytes vs main: OK

ydbd size dash	main: 55a88ca	merge: 6c488f5	diff	diff %
ydbd size	6 149 801 808 Bytes	6 149 801 776 Bytes	-32 Bytes	-0.000%
ydbd stripped size	1 534 429 616 Bytes	1 534 429 552 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}