Build Scans:

• elasticsearch-intake #32242 / part2
• elasticsearch-pull-request #109257 / part-2
• elasticsearch-pull-request #108346 / checkpart2_release-tests
• elasticsearch-pull-request #108275 / checkpart2_release-tests
• elasticsearch-pull-request #108263 / checkpart2_release-tests
• elasticsearch-pull-request #108244 / checkpart2_release-tests

Reproduction Line:

./gradlew ":x-pack:plugin:downsample:internalClusterTest" --tests "org.elasticsearch.xpack.downsample.DownsampleIT.testAggregateMethod" -Dtests.seed=DA6CF6555B348C1 -Dtests.locale=agq -Dtests.timezone=America/Thunder_Bay -Druntime.java=25

Applicable branches:
main

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

org.elasticsearch.ElasticsearchException: downsample task [downsample-downsample-5m-.ds-metrics-foo-2025.12.11-000001-0-5m] failed

Issue Reasons:

• [main] 6 failures in test testAggregateMethod (0.7% fail rate in 907 executions)
• [main] 4 failures in step checkpart2_release-tests (40.0% fail rate in 10 executions)
• [main] 5 failures in pipeline elasticsearch-pull-request (0.9% fail rate in 588 executions)

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