[CI] LangPainlessClientYamlTestSuiteIT test {yaml=painless/146_dense_vector_bit_basic/Cosine Similarity is not supported} failing

[elasticsearchmachine]

Build Scans:

• elasticsearch-periodic-platform-support #3209 / oraclelinux-7_platform-support-unix
• elasticsearch-periodic #3232 / openjdk21_checkpart1_java-matrix
• elasticsearch-pull-request #23907 / part-1

Reproduction Line:

./gradlew ':modules:lang-painless:yamlRestTest' --tests "org.elasticsearch.painless.LangPainlessClientYamlTestSuiteIT.test {yaml=painless/146_dense_vector_bit_basic/Cosine Similarity is not supported}" -Dtests.seed=ED89F8CD62B783B9 -Dtests.locale=es-ES -Dtests.timezone=America/Lower_Princes -Druntime.java=22

Applicable branches:
main

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

java.lang.AssertionError: Failure at [painless/146_dense_vector_bit_basic:136]: expected [400] status code but api [search] returned [200 OK] [{"took":2,"timed_out":false,"_shards":{"total":2,"successful":1,"skipped":0,"failed":1,"failures":[{"shard":0,"index":"test-index","node":"3RCBJqISShqsIk6rXEn1DA","reason":{"type":"script_exception","reason":"runtime error","script_stack":["org.elasticsearch.server@8.15.0-SNAPSHOT/org.elasticsearch.script.field.vectors.BitBinaryDenseVector.cosineSimilarity(BitBinaryDenseVector.java:71)","org.elasticsearch.server@8.15.0-SNAPSHOT/org.elasticsearch.script.VectorScoreScriptUtils$ByteCosineSimilarity.cosineSimilarity(VectorScoreScriptUtils.java:385)","org.elasticsearch.server@8.15.0-SNAPSHOT/org.elasticsearch.script.VectorScoreScriptUtils$CosineSimilarity.cosineSimilarity(VectorScoreScriptUtils.java:428)","cosineSimilarity(params.query_vector, 'vector')","                       ^---- HERE"],"script":"cosineSimilarity(params.query_vector, 'vector')","lang":"painless","position":{"offset":23,"start":0,"end":47},"caused_by":{"type":"unsupported_operation_exception","reason":"cosineSimilarity is not supported for bit vectors."}}}]},"hits":{"total":0,"max_score":null,"hits":[]}}]

Issue Reasons:

• [main] 3 failures in test test {yaml=painless/146_dense_vector_bit_basic/Cosine Similarity is not supported} (1.0% fail rate)
• [main] 1.0% failure rate in test test {yaml=painless/146_dense_vector_bit_basic/Cosine Similarity is not supported} (1.0% fail rate)

Note:
This issue was created using new, in-development muting automation. Please mind any issues.

[elasticsearchmachine]

This has been muted on branch main

Mute Reasons:

• [main] 3 failures in test test {yaml=painless/146_dense_vector_bit_basic/Cosine Similarity is not supported} (1.0% fail rate)
• [main] 1.0% failure rate in test test {yaml=painless/146_dense_vector_bit_basic/Cosine Similarity is not supported} (1.0% fail rate)

Build Scans:

• elasticsearch-periodic-platform-support #3209 / oraclelinux-7_platform-support-unix
• elasticsearch-periodic #3232 / openjdk21_checkpart1_java-matrix
• elasticsearch-pull-request #23907 / part-1

[elasticsearchmachine]

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

[ldematte]

@benwtrent could this be related to #110059?

[elasticsearchmachine]

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

[mayya-sharipova]

This happens in cases where an index has more than 1 shards, even if we get expected failures on 1 shard, no failures on other empty shards make the whole request return 200.

I will fix the test to ensure that index has always 1 shard.