Build Scans:

• elasticsearch-periodic #9699 / openjdk21_checkpart1_java-matrix
• elasticsearch-intake #26308 / part1
• elasticsearch-pull-request #83592 / part-1
• elasticsearch-intake #26241 / part1
• elasticsearch-pull-request #83407 / part-1
• elasticsearch-pull-request #83378 / part-1
• elasticsearch-pull-request #83347 / part-1

Reproduction Line:

./gradlew ":server:internalClusterTest" --tests "org.elasticsearch.index.mapper.vectors.DenseVectorFieldIndexTypeUpdateIT.testDenseVectorMappingUpdate {initialType=int4_flat updateType=bbq_hnsw}" -Dtests.seed=59EB8F01B44AFA67 -Dtests.locale=en-HK -Dtests.timezone=Europe/Warsaw -Druntime.java=21

Applicable branches:
main

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

java.lang.AssertionError: Count is 6 hits but 7 was expected.  Total shards: 2 Successful shards: 2 & 0 shard failures:

Issue Reasons:

• [main] 7 failures in test testDenseVectorMappingUpdate {initialType=int4_flat updateType=bbq_hnsw} (2.2% fail rate in 321 executions)
• [main] 4 failures in step part-1 (2.5% fail rate in 158 executions)
• [main] 2 failures in step part1 (2.7% fail rate in 75 executions)
• [main] 4 failures in pipeline elasticsearch-pull-request (2.6% fail rate in 154 executions)
• [main] 2 failures in pipeline elasticsearch-intake (2.7% fail rate in 75 executions)

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