task runner actor local: resume inputs after all checkpoint…

[yumkam]

… is sent via all outputs

with multiple output channels, input channel was resumed multiple times; this could've resulted in a bug before, but after #22263 triggers exceptions

Changelog entry

...

Changelog category

• Not for changelog (changelog entry is not required)

Description for reviewers

YQ-4665
(Watermarks resumed inputs once, right after finishing with TaskRunner, no similar problem)

[github-actions]

⚪ 2025-09-12 13:45:44 UTC Pre-commit check linux-x86_64-release-asan for ea80487 has started.
⚪ 2025-09-12 13:45:58 UTC Artifacts will be uploaded here
⚪ 2025-09-12 13:49:21 UTC ya make is running...
⚫ 2025-09-12 14:14:08 UTC Check cancelled

[github-actions]

🟢 2025-09-12 18:15:48 UTC The validation of the Pull Request description is successful.

[github-actions]

⚪ 2025-09-12 13:46:31 UTC Pre-commit check linux-x86_64-relwithdebinfo for ea80487 has started.
⚪ 2025-09-12 13:47:01 UTC Artifacts will be uploaded here
⚪ 2025-09-12 13:51:20 UTC ya make is running...
⚫ 2025-09-12 14:14:08 UTC Check cancelled

[github-actions]

⚪ 2025-09-12 14:17:10 UTC Pre-commit check linux-x86_64-release-asan for f9b703f has started.
⚪ 2025-09-12 14:17:14 UTC Artifacts will be uploaded here
⚪ 2025-09-12 14:20:35 UTC ya make is running...
🟡 2025-09-12 16:16:21 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?
15438	15038	0	119	256	25

🟢 2025-09-12 16:17:47 UTC Build successful.
🟢 2025-09-12 16:18:09 UTC ydbd size 4.0 GiB changed* by +9.3 KiB, which is < 100.0 KiB vs main: OK

ydbd size dash	main: e421060	merge: f9b703f	diff	diff %
ydbd size	4 321 070 776 Bytes	4 321 080 304 Bytes	+9.3 KiB	+0.000%
ydbd stripped size	1 494 449 624 Bytes	1 494 455 512 Bytes	+5.8 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]

⚪ 2025-09-12 14:19:06 UTC Pre-commit check linux-x86_64-relwithdebinfo for f9b703f has started.
⚪ 2025-09-12 14:19:19 UTC Artifacts will be uploaded here
⚪ 2025-09-12 14:22:48 UTC ya make is running...
🟡 2025-09-12 15:38:51 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?
38183	35423	0	4	2727	29

⚪ 2025-09-12 15:42:06 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-09-12 15:52:40 UTC Tests successful.

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
227 (only retried tests)	207	0	0	0	20

🟢 2025-09-12 15:52:48 UTC Build successful.
🟢 2025-09-12 15:53:05 UTC ydbd size 2.3 GiB changed* by +4.1 KiB, which is < 100.0 KiB vs main: OK

ydbd size dash	main: e421060	merge: f9b703f	diff	diff %
ydbd size	2 469 796 400 Bytes	2 469 800 560 Bytes	+4.1 KiB	+0.000%
ydbd stripped size	516 037 928 Bytes	516 038 952 Bytes	+1.0 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}

[Copilot]

Pull Request Overview

Fixes a bug where input channels were being resumed multiple times when multiple output channels were present, causing exceptions after a related change. The fix ensures input channels are only resumed after all checkpoint data has been sent through all output channels.

• Added checkpoint tracking mechanism to count unsent checkpoints
• Replaced immediate resume calls with deferred resume logic
• Ensures input channels resume only after all outputs have sent their checkpoint data

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