[CI] CcsCommonYamlTestSuiteIT test {p0=search.vectors/41_knn_search_half_byte_quantized/Test index configured rescore vector score consistency} failing

[elasticsearchmachine]

Build Scans:

• elasticsearch-periodic #8304 / openjdk22_checkpart1_java-matrix
• elasticsearch-periodic-platform-support #8290 / sles-12_platform-support-unix

Reproduction Line:

./gradlew ":qa:ccs-common-rest:yamlRestTest" --tests "org.elasticsearch.test.rest.yaml.CcsCommonYamlTestSuiteIT" -Dtests.method="test {p0=search.vectors/41_knn_search_half_byte_quantized/Test index configured rescore vector score consistency}" -Dtests.seed=C53FA53C7F9A1031 -Dtests.locale=en-SX -Dtests.timezone=Asia/Novosibirsk -Druntime.java=22

Applicable branches:
8.19

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

java.lang.AssertionError: Failure at [search.vectors/41_knn_search_half_byte_quantized:938]: 
Expected: <30905.838>
     but: was <33801.56>

Issue Reasons:

• [8.19] 2 failures in test test {p0=search.vectors/41_knn_search_half_byte_quantized/Test index configured rescore vector score consistency} (0.9% fail rate in 234 executions)

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

[elasticsearchmachine]

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

[elasticsearchmachine]

Pinging @elastic/es-search-relevance (Team:Search Relevance)