[CI] RcsCcsCommonYamlTestSuiteIT class failing

[elasticsearchmachine]

Build Scans:

• elasticsearch-periodic #8859 / release-tests
• elasticsearch-pull-request #76662 / part-6
• elasticsearch-periodic #8853 / release-tests
• elasticsearch-pull-request #76598 / part-6
• elasticsearch-pull-request #76574 / part-6
• elasticsearch-pull-request #76532 / checkpart6_release-tests
• elasticsearch-pull-request #76526 / checkpart6_release-tests
• elasticsearch-periodic #8835 / release-tests
• elasticsearch-periodic #8829 / release-tests
• elasticsearch-pull-request #76417 / checkpart6_release-tests

Reproduction Line:

./gradlew ":qa:ccs-common-rest:yamlRestTest" --tests "org.elasticsearch.test.rest.yaml.RcsCcsCommonYamlTestSuiteIT" -Dtests.method="test {p0=search.vectors/46_knn_search_bbq_ivf/default oversample value}" -Dtests.seed=8DAF9725DBEB80A1 -Dbuild.snapshot=false -Dtests.jvm.argline="-Dbuild.snapshot=false" -Dlicense.key=x-pack/license-tools/src/test/resources/public.key -Dtests.locale=fo-Latn-FO -Dtests.timezone=Africa/Monrovia -Druntime.java=24

Applicable branches:
main

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

java.lang.AssertionError: Failure at [search.vectors/46_knn_search_bbq_ivf:7]: expected [2xx] status code but api [indices.create] returned [400 Bad Request] [{"error":{"root_cause":[{"type":"mapper_parsing_exception","reason":"Unknown vector index options type [bbq_ivf] for field [vector]","stack_trace":"org.elasticsearch.index.mapper.MapperParsingException: Unknown vector index options type [bbq_ivf] for field [vector]\n\tat org.elasticsearch.server@9.1.0/org.elasticsearch.index.mapper.vectors.DenseVectorFieldMapper.parseIndexOptions(DenseVectorFieldMapper.java:2813)\n\tat org.elasticsearch.server@9.1.0/org.elasticsearch.index.mapper.vectors.DenseVectorFieldMapper$Builder.lambda$new$15(DenseVectorFieldMapper.java:308)\n\tat org.elasticsearch.server@9.1.0/org.elasticsearch.index.mapper.FieldMapper$Parameter.parse(FieldMapper.java:973)\n\tat org.elasticsearch.server@9.1.0/org.elasticsearch.index.mapper.FieldMapper$Builder.parse(FieldMapper.java:1589)\n\tat org.elasticsearch.server@9.1.
[truncated]

Issue Reasons:

• [main] 7 consecutive failures in step release-tests
• [main] 6 consecutive failures in step checkpart6_release-tests
• [main] 18 failures in class org.elasticsearch.test.rest.yaml.RcsCcsCommonYamlTestSuiteIT (2.3% fail rate in 793 executions)
• [main] 5 failures in step part-6 (1.5% fail rate in 332 executions)
• [main] 7 failures in step release-tests (100.0% fail rate in 7 executions)
• [main] 6 failures in step checkpart6_release-tests (100.0% fail rate in 6 executions)
• [main] 11 failures in pipeline elasticsearch-pull-request (3.1% fail rate in 354 executions)
• [main] 7 failures in pipeline elasticsearch-periodic (53.8% fail rate in 13 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)

[JVerwolf]

Hey @benwtrent, I see you are the author of this test, are you able to take a look at this? I'm going to re-route this to Search Relevance, since this looks like a CCS/Vector-Search issue

[elasticsearchmachine]

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

[iverase]

bbq_ivf is behind a feature flag, that's the reason is failing in the release tests.

[iverase]

@carlosdelest do you think this is solved by #129569?