[CI] EsqlClientYamlAsyncIT test {p0=esql/60_usage/Basic ESQL usage output (telemetry) non-snapshot version} failing

[elasticsearchmachine]

Build Scans:

• elasticsearch-periodic #4774 / release-tests
• elasticsearch-periodic #4764 / release-tests

Reproduction Line:

./gradlew ":x-pack:plugin:esql:qa:server:single-node:yamlRestTest" --tests "org.elasticsearch.xpack.esql.qa.single_node.EsqlClientYamlAsyncIT.test {p0=esql/60_usage/Basic ESQL usage output (telemetry) non-snapshot version}" -Dtests.seed=95195E40179A38FA -Dbuild.snapshot=false -Dtests.jvm.argline="-Dbuild.snapshot=false" -Dlicense.key=x-pack/license-tools/src/test/resources/public.key -Dtests.locale=hu-Latn-HU -Dtests.timezone=Atlantic/South_Georgia -Druntime.java=23

Applicable branches: main

Reproduces locally?: N/A

Failure History: See dashboard&_a=(controlGroupState:(initialChildControlState:('0c0c9cb8-ccd2-45c6-9b13-96bac4abc542':(dataViewId:fbbdc689-be23-4b3d-8057-aa402e9ed0c5,fieldName:task.keyword,order:0,selectedOptions:!(),title:'GradleTask',type:optionsListControl),'4e6ad9d6-6fdc-4fcc-bf1a-aa6ca79e0850':(dataViewId:fbbdc689-be23-4b3d-8057-aa402e9ed0c5,fieldName:className.keyword,order:1,selectedOptions:!(org.elasticsearch.xpack.esql.qa.single_node.EsqlClientYamlAsyncIT),title:'Suite',type:optionsListControl),'144933da-5c1b-4257-a969-7f43455a7901':(dataViewId:fbbdc689-be23-4b3d-8057-aa402e9ed0c5,fieldName:name.keyword,order:2,selectedOptions:!(test%20%7Bp0%3Desql%2F60_usage%2FBasic%20ESQL%20usage%20output%20(telemetry)%20non-snapshot%20version%7D),title:'Test',type:optionsListControl)))))

Failure Message:

java.lang.AssertionError: Failure at [esql/60_usage:165]: field [esql.functions] doesn't have length [118]
Expected: <118>
     but: was <116>

Issue Reasons:

• [main] 2 consecutive failures in test test {p0=esql/60_usage/Basic ESQL usage output (telemetry) non-snapshot version}
• [main] 2 consecutive failures in step release-tests
• [main] 2 consecutive failures in pipeline elasticsearch-periodic
• [main] 2 failures in test test {p0=esql/60_usage/Basic ESQL usage output (telemetry) non-snapshot version} (66.7% fail rate in 3 executions)
• [main] 2 failures in step release-tests (66.7% fail rate in 3 executions)
• [main] 2 failures in pipeline elasticsearch-periodic (66.7% fail rate in 3 executions)

Note: This issue was created using new test triage automation. Please report issues or feedback to es-delivery.

[elasticsearchmachine]

Pinging @elastic/es-analytical-engine (Team:Analytics)

[astefan]

@smalyshev please, have a look at this one. Thanks

[luigidellaquila]

https://github.com/elastic/elasticsearch/pull/116470