Show partial results after search has been canceled

[lukasolson]

Summary

Resolves #205783.
Resolves #215950.

When a user clicks "Cancel" while a query is running, show the partial results instead of simply canceling the search request.

Before ("cancel" cancels the query and shows empty results):

Screen.Recording.2025-11-10.at.2.12.09.PM.mov

After ("cancel" retrieves the latest results, cancels the query, and shows the results):

Screen.Recording.2025-11-10.at.2.10.23.PM.mov

[kibanamachine]

Project deployments require a Github label, please add one or more of ci:project-deploy-(elasticsearch|observability|security) and trigger the job through the checkbox again.

[elasticmachine]

Pinging @elastic/kibana-data-discovery (Team:DataDiscovery)

[ThomThomson]

Abort controller reason change LGTM!

[drewdaemon]

Code changes make sense to me.

Working for me in a mixed ccs scenario:

Also, I guess this is expected here since we don't have results?

Let me know if there's anything else to test.

I'll leave the approval to Alex. Great feature!

[drewdaemon]

Does it make sense to add a test to this suite for the cancelled case?

[AlexGPlay]

code changes LGTM too

[nickofthyme]

Vis code change LGTM

[drewdaemon]

Retested on ES|QL, things seem to work great. Test coverage has improved and I no longer see the undefined requests.

[lukasolson]

• [job] [logs] FTR Configs Global field list #30 / discover/ccs_compatible discover search CCS cancel classic mode should show warning and results

Running the flaky test runner on this one: https://buildkite.com/elastic/kibana-flaky-test-suite-runner/builds/10073

[kibanamachine]

Flaky Test Runner Stats

🟠 Some tests failed. - kibana-flaky-test-suite-runner#10073

[❌] src/platform/test/functional/config.ccs.ts: 0/25 tests passed.

see run history

[kibanamachine]

Flaky Test Runner Stats

🎉 All tests passed! - kibana-flaky-test-suite-runner#10090

[✅] src/platform/test/functional/config.ccs.ts: 25/25 tests passed.

see run history

[elasticmachine]

💛 Build succeeded, but was flaky

• Buildkite Build
• Commit: d317bf7

Failed CI Steps

• FTR Configs #121

Test Failures

• [job] [logs] FTR Configs #121 / serverless observability UI - Cases and Rules Serverless Observability Cases Cases list row actions Severity to critical

Metrics [docs]

Public APIs missing comments

Total count of every public API that lacks a comment. Target amount is 0. Run node scripts/build_api_docs --plugin [yourplugin] --stats comments for more detailed information.

id	before	after	diff
expressions	1796	1802	+6
kibanaUtils	422	423	+1
total			+7

Async chunks

Total size of all lazy-loaded chunks that will be downloaded as the user navigates the app

id	before	after	diff
dashboard	721.3KB	721.3KB	+35.0B
discover	1.3MB	1.3MB	+286.0B
total			+321.0B

Page load bundle

Size of the bundles that are downloaded on every page load. Target size is below 100kb

id	before	after	diff
data	442.4KB	442.8KB	+406.0B
expressions	93.3KB	93.5KB	+197.0B
kibanaUtils	48.8KB	49.0KB	+134.0B
total			+737.0B

Unknown metric groups

API count

id	before	after	diff
expressions	2269	2275	+6
kibanaUtils	615	616	+1
total			+7

History

• 💛 Build #372185 was flaky 79c0fdd
• 💔 Build #372101 failed d934e82
• 💚 Build #370905 succeeded fa55aff
• 💛 Build #365160 was flaky f773507
• 💔 Build #364636 failed 07fd21c
• 💚 Build #363995 succeeded ebbe3db

cc @lukasolson