LocalDB: low-priority cancellable transactions

[snaury]

Changelog entry

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Changelog category

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Description for reviewers

Related to #14936.

Support for low-priority cancellable transactions in LocalDB, which will be used to implement better datashard reads cancellation.

[github-actions]

🟢 2025-03-05 13:14:22 UTC The validation of the Pull Request description is successful.

[github-actions]

⚪ 2025-03-05 13:14:47 UTC Pre-commit check linux-x86_64-release-asan for b8242c9 has started.
⚪ 2025-03-05 13:15:07 UTC Artifacts will be uploaded here
⚪ 2025-03-05 13:18:02 UTC ya make is running...
🟡 2025-03-05 14:51:08 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?
13481	13333	0	93	16	39

⚪ 2025-03-05 14:52:34 UTC ya make is running... (failed tests rerun, try 2)
🟡 2025-03-05 15:11:55 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?
211 (only retried tests)	169	0	5	3	34

⚪ 2025-03-05 15:12:08 UTC ya make is running... (failed tests rerun, try 3)
🟡 2025-03-05 15:26:31 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?
73 (only retried tests)	36	0	3	1	33

🟢 2025-03-05 15:26:42 UTC Build successful.
🟢 2025-03-05 15:27:12 UTC ydbd size 3.7 GiB changed* by +79.4 KiB, which is < 100.0 KiB vs main: OK

ydbd size dash	main: a01e65f	merge: b8242c9	diff	diff %
ydbd size	3 995 190 984 Bytes	3 995 272 336 Bytes	+79.4 KiB	+0.002%
ydbd stripped size	1 390 014 632 Bytes	1 390 048 072 Bytes	+32.7 KiB	+0.002%

^{*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]

⚪ 2025-03-05 13:16:36 UTC Pre-commit check linux-x86_64-relwithdebinfo for b8242c9 has started.
⚪ 2025-03-05 13:17:27 UTC Artifacts will be uploaded here
⚪ 2025-03-05 13:20:49 UTC ya make is running...
🟡 2025-03-05 14:40:39 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?
27846	25252	0	2	2467	125

⚪ 2025-03-05 14:43:07 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-03-05 14:56:43 UTC Tests successful.

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
182 (only retried tests)	72	0	0	0	110

🟢 2025-03-05 14:56:54 UTC Build successful.
🟢 2025-03-05 14:57:15 UTC ydbd size 2.1 GiB changed* by +48.2 KiB, which is < 100.0 KiB vs main: OK

ydbd size dash	main: a01e65f	merge: b8242c9	diff	diff %
ydbd size	2 292 785 416 Bytes	2 292 834 744 Bytes	+48.2 KiB	+0.002%
ydbd stripped size	480 305 216 Bytes	480 322 688 Bytes	+17.1 KiB	+0.004%

^{*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]

⚪ 2025-03-06 07:20:02 UTC Pre-commit check linux-x86_64-release-asan for 9d1fdab has started.
⚪ 2025-03-06 07:20:17 UTC Artifacts will be uploaded here
⚪ 2025-03-06 07:23:26 UTC ya make is running...
🟡 2025-03-06 09:06:27 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?
13493	13089	0	288	77	39

⚪ 2025-03-06 09:07:37 UTC ya make is running... (failed tests rerun, try 2)
🟡 2025-03-06 09:25:17 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?
581 (only retried tests)	300	0	189	59	33

⚪ 2025-03-06 09:25:31 UTC ya make is running... (failed tests rerun, try 3)
🟡 2025-03-06 09:41:58 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?
421 (only retried tests)	158	0	184	46	33

🟢 2025-03-06 09:42:21 UTC Build successful.
🟢 2025-03-06 09:42:59 UTC ydbd size 3.7 GiB changed* by -3.4 MiB, which is <= 0 Bytes vs main: OK

ydbd size dash	main: f401330	merge: 9d1fdab	diff	diff %
ydbd size	3 997 165 976 Bytes	3 993 619 784 Bytes	-3.4 MiB	-0.089%
ydbd stripped size	1 390 278 760 Bytes	1 388 749 832 Bytes	-1.5 MiB	-0.110%

^{*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]

⚪ 2025-03-06 07:20:14 UTC Pre-commit check linux-x86_64-relwithdebinfo for 9d1fdab has started.
⚪ 2025-03-06 07:20:28 UTC Artifacts will be uploaded here
⚪ 2025-03-06 07:23:22 UTC ya make is running...
🟡 2025-03-06 08:39:52 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?
27858	25262	0	3	2470	123

⚪ 2025-03-06 08:42:24 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-03-06 08:55:23 UTC Tests successful.

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
178 (only retried tests)	70	0	0	0	108

🟢 2025-03-06 08:55:29 UTC Build successful.
🟢 2025-03-06 08:55:51 UTC ydbd size 2.1 GiB changed* by -896.8 KiB, which is <= 0 Bytes vs main: OK

ydbd size dash	main: f401330	merge: 9d1fdab	diff	diff %
ydbd size	2 294 064 440 Bytes	2 293 146 152 Bytes	-896.8 KiB	-0.040%
ydbd stripped size	480 395 392 Bytes	480 458 432 Bytes	+61.6 KiB	+0.013%

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