Build Scans:

• elasticsearch-periodic #11985 / release-tests
• elasticsearch-periodic #11985 / release-tests
• elasticsearch-pull-request #127601 / checkpart3_release-tests
• elasticsearch-pull-request #127566 / checkpart3_release-tests
• elasticsearch-pull-request #127351 / checkpart3_release-tests
• elasticsearch-pull-request #127333 / checkpart3_release-tests
• elasticsearch-pull-request #127291 / checkpart3_release-tests
• elasticsearch-pull-request #127258 / checkpart3_release-tests
• elasticsearch-pull-request #127211 / checkpart3_release-tests
• elasticsearch-pull-request #127202 / checkpart3_release-tests

Reproduction Line:

./gradlew ":x-pack:plugin:esql:test" --tests "org.elasticsearch.xpack.esql.expression.function.vector.MagnitudeSerializationTests.testEqualsAndHashcode" -Dtests.seed=59700DEF7E317431 -Dbuild.snapshot=false -Dtests.jvm.argline="-Dbuild.snapshot=false" -Dlicense.key=x-pack/license-tools/src/test/resources/public.key -Dtests.locale=uk -Dtests.timezone=Etc/GMT+4 -Druntime.java=25

Applicable branches:
main

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

java.lang.AssertionError: Unknown NamedWriteable [org.elasticsearch.xpack.esql.core.expression.Expression][Magnitude]

Issue Reasons:

• [main] 2 consecutive failures in step release-tests
• [main] 14 consecutive failures in step checkpart3_release-tests
• [main] 16 failures in test testEqualsAndHashcode (1.8% fail rate in 885 executions)
• [main] 2 failures in step release-tests (100.0% fail rate in 2 executions)
• [main] 14 failures in step checkpart3_release-tests (100.0% fail rate in 14 executions)
• [main] 14 failures in pipeline elasticsearch-pull-request (2.4% fail rate in 591 executions)

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