Build Scans:

• elasticsearch-periodic-platform-support #10665 / windows-2025_checkpart1_platform-support-windows
• elasticsearch-periodic-platform-support #10593 / windows-2025_checkpart1_platform-support-windows

Reproduction Line:

gradlew ":qa:lucene-index-compatibility:javaRestTest" --tests "org.elasticsearch.lucene.FullClusterRestartSystemIndexCompatibilityIT" -Dtests.method="testAsyncSearchIndexMigration {p0=8.18.0}" -Dtests.seed=C7331D83F3A52EA -Dtests.locale=ksb-TZ -Dtests.timezone=Europe/Podgorica -Druntime.java=24 

Applicable branches:
9.0

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

java.lang.AssertionError: expected:<2431> but was:<0> 

Issue Reasons:

• [9.0] 2 failures in test testAsyncSearchIndexMigration {p0=9.0.7} (0.7% fail rate in 290 executions)
• [9.0] 2 failures in step windows-2025_checkpart1_platform-support-windows (15.4% fail rate in 13 executions)
• [9.0] 2 failures in pipeline elasticsearch-periodic-platform-support (15.4% fail rate in 13 executions)

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