[CI] RcsCcsCommonYamlTestSuiteIT test {p0=search.vectors/90_sparse_vector/Indexing and searching multi-value sparse vectors in >=8.15} failing

[elasticsearchmachine]

Build Scans:

• elasticsearch-intake #27393 / part6
• elasticsearch-pull-request #87092 / part-6
• elasticsearch-pull-request #87085 / part-6
• elasticsearch-pull-request #87081 / part-6
• elasticsearch-pull-request #86970 / part-6
• elasticsearch-pull-request #86889 / part-6-fips
• elasticsearch-intake #27126 / part6

Reproduction Line:

./gradlew ":qa:ccs-common-rest:yamlRestTest" --tests "org.elasticsearch.test.rest.yaml.RcsCcsCommonYamlTestSuiteIT" -Dtests.method="test {p0=search.vectors/90_sparse_vector/Indexing and searching multi-value sparse vectors in >=8.15}" -Dtests.seed=30A47466C9DAA754 -Dtests.locale=blo-BJ -Dtests.timezone=Pacific/Guam -Druntime.java=24

Applicable branches:
main

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

java.lang.AssertionError: Failure at [search.vectors/90_sparse_vector:313]: 
Expected: <3>
     but: was <2>

Issue Reasons:

• [main] 7 failures in test test {p0=search.vectors/90_sparse_vector/Indexing and searching multi-value sparse vectors in >=8.15} (0.7% fail rate in 976 executions)
• [main] 2 failures in step part6 (1.9% fail rate in 106 executions)
• [main] 4 failures in step part-6 (1.1% fail rate in 368 executions)
• [main] 2 failures in pipeline elasticsearch-intake (1.9% fail rate in 106 executions)
• [main] 5 failures in pipeline elasticsearch-pull-request (1.3% fail rate in 374 executions)

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

[elasticsearchmachine]

This has been muted on branch main

Mute Reasons:

• [main] 7 failures in test test {p0=search.vectors/90_sparse_vector/Indexing and searching multi-value sparse vectors in >=8.15} (0.7% fail rate in 976 executions)
• [main] 2 failures in step part6 (1.9% fail rate in 106 executions)
• [main] 4 failures in step part-6 (1.1% fail rate in 368 executions)
• [main] 2 failures in pipeline elasticsearch-intake (1.9% fail rate in 106 executions)
• [main] 5 failures in pipeline elasticsearch-pull-request (1.3% fail rate in 374 executions)

Build Scans:

• elasticsearch-intake #27393 / part6
• elasticsearch-pull-request #87092 / part-6
• elasticsearch-pull-request #87085 / part-6
• elasticsearch-pull-request #87081 / part-6
• elasticsearch-pull-request #86970 / part-6
• elasticsearch-pull-request #86889 / part-6-fips
• elasticsearch-intake #27126 / part6

[elasticsearchmachine]

Pinging @elastic/es-core-infra (Team:Core/Infra)

[elasticsearchmachine]

Pinging @elastic/es-search-foundations (Team:Search Foundations)

[cbuescher]

This one finally doesn't look like only a timeout, see https://gradle-enterprise.elastic.co/s/i3xfhonvpjl32/tests/task/:qa:ccs-common-rest:yamlRestTest/details/org.elasticsearch.test.rest.yaml.RcsCcsCommonYamlTestSuiteIT/test%20%7Bp0%3Dsearch.vectors%2F90_sparse_vector%2FIndexing%20and%20searching%20multi-value%20sparse%20vectors%20in%20%3E%3D8.15%7D?top-execution=1

java.lang.AssertionError: Failure at [search.vectors/90_sparse_vector:313]: 
Expected: <3>
     but: was <2>

This looks like a test from @elastic/search-relevance though so reassigning to them for further investigation.