YQ-20669-i fixed external sources ddl errors

[GrigoriyPA]

Changelog entry

Fixed external sources ddl errors, also fix for: #20669

Changelog category

• Bugfix

Description for reviewers

[GrigoriyPA]

#20669

[Copilot]

Pull Request Overview

This PR fixes DDL errors for external sources by improving test coverage for drop operations and enhancing error messages with operation context.

• Updated unit tests to validate specific error substrings for drop table/source operations.
• Enhanced error reporting in SendSchemeRequest and KqpSchemeExecuter to include the operation type in failure messages.
• Added a new peer dependency on schemeshard/operations.pb.h in the build.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 3 comments.

File	Description
ydb/core/kqp/ut/scheme/kqp_scheme_ut.cpp	Extended checkNotFound to accept and assert an extra error string
ydb/core/kqp/gateway/utils/ya.make	Added ydb/core/protos/schemeshard to the peer directories
ydb/core/kqp/gateway/utils/metadata_helpers.cpp	Enhanced SendSchemeRequest error messages with operation type
ydb/core/kqp/executer_actor/kqp_scheme_executer.cpp	Wrapped future results to include operation type context

[github-actions]

🟢 2025-07-05 10:44:50 UTC The validation of the Pull Request description is successful.

[github-actions]

⚪ 2025-07-05 10:45:41 UTC Pre-commit check linux-x86_64-relwithdebinfo for 54ce71d has started.
⚪ 2025-07-05 10:45:52 UTC Artifacts will be uploaded here
⚪ 2025-07-05 10:49:07 UTC ya make is running...
🟡 2025-07-05 11:49:45 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?
29273	27861	0	7	1362	43

⚪ 2025-07-05 11:52:21 UTC ya make is running... (failed tests rerun, try 2)
🟡 2025-07-05 11:58:58 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?
397 (only retried tests)	356	0	1	2	38

⚪ 2025-07-05 11:59:08 UTC ya make is running... (failed tests rerun, try 3)
🔴 2025-07-05 12:05:34 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?
219 (only retried tests)	178	0	1	2	38

🟢 2025-07-05 12:05:41 UTC Build successful.
🟢 2025-07-05 12:06:02 UTC ydbd size 2.2 GiB changed* by +22.1 KiB, which is < 100.0 KiB vs main: OK

ydbd size dash	main: c59858d	merge: 54ce71d	diff	diff %
ydbd size	2 387 865 384 Bytes	2 387 888 024 Bytes	+22.1 KiB	+0.001%
ydbd stripped size	499 603 048 Bytes	499 610 280 Bytes	+7.1 KiB	+0.001%

^{*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]

⚪ 2025-07-05 10:45:43 UTC Pre-commit check linux-x86_64-release-asan for 54ce71d has started.
⚪ 2025-07-05 10:45:54 UTC Artifacts will be uploaded here
⚪ 2025-07-05 10:49:06 UTC ya make is running...
🟡 2025-07-05 12:29:20 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?
14118	13770	0	124	195	29

🟢 2025-07-05 12:30:39 UTC Build successful.
🟢 2025-07-05 12:31:06 UTC ydbd size 3.9 GiB changed* by +26.9 KiB, which is < 100.0 KiB vs main: OK

ydbd size dash	main: c59858d	merge: 54ce71d	diff	diff %
ydbd size	4 200 002 176 Bytes	4 200 029 680 Bytes	+26.9 KiB	+0.001%
ydbd stripped size	1 455 233 272 Bytes	1 455 239 480 Bytes	+6.1 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]

⚪ 2025-07-05 13:27:56 UTC Pre-commit check linux-x86_64-relwithdebinfo for 8024be5 has started.
⚪ 2025-07-05 13:28:08 UTC Artifacts will be uploaded here
⚪ 2025-07-05 13:31:25 UTC ya make is running...
🟡 2025-07-05 14:29:44 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?
29273	27867	0	2	1360	44

⚪ 2025-07-05 14:32:19 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-07-05 14:43:12 UTC Tests successful.

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
230 (only retried tests)	189	0	0	2	39

🟢 2025-07-05 14:43:19 UTC Build successful.
🟢 2025-07-05 14:43:37 UTC ydbd size 2.2 GiB changed* by +22.1 KiB, which is < 100.0 KiB vs main: OK

ydbd size dash	main: c59858d	merge: 8024be5	diff	diff %
ydbd size	2 387 865 384 Bytes	2 387 888 024 Bytes	+22.1 KiB	+0.001%
ydbd stripped size	499 603 048 Bytes	499 610 280 Bytes	+7.1 KiB	+0.001%

^{*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]

⚪ 2025-07-05 13:28:15 UTC Pre-commit check linux-x86_64-release-asan for 8024be5 has started.
⚪ 2025-07-05 13:28:26 UTC Artifacts will be uploaded here
⚪ 2025-07-05 13:31:45 UTC ya make is running...
🟡 2025-07-05 15:17:25 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?
14118	13653	0	219	212	34

🟢 2025-07-05 15:18:42 UTC Build successful.
🟢 2025-07-05 15:19:14 UTC ydbd size 3.9 GiB changed* by +26.9 KiB, which is < 100.0 KiB vs main: OK

ydbd size dash	main: c59858d	merge: 8024be5	diff	diff %
ydbd size	4 200 002 176 Bytes	4 200 029 680 Bytes	+26.9 KiB	+0.001%
ydbd stripped size	1 455 233 272 Bytes	1 455 239 480 Bytes	+6.1 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}