[CI] UpdateMappingIntegrationIT class failing

[elasticsearchmachine]

Build Scans:

• elasticsearch-periodic #3938 / single-processor-node-tests
• elasticsearch-pull-request #29721 / part-1
• elasticsearch-pull-request #29602 / part-1-fips
• elasticsearch-pull-request #29418 / part-1

Reproduction Line:

./gradlew ":server:internalClusterTest" --tests "org.elasticsearch.indices.mapping.UpdateMappingIntegrationIT.testUpdateMappingNoChanges" -Dtests.seed=5781C7FEEB91EDF1 -Dtests.configure_test_clusters_with_one_processor=true -Dtests.locale=fr -Dtests.timezone=Asia/Novosibirsk -Druntime.java=22

Applicable branches:
main

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

org.elasticsearch.discovery.MasterNotDiscoveredException: null

Issue Reasons:

• [main] 4 failures in class org.elasticsearch.indices.mapping.UpdateMappingIntegrationIT (0.6% fail rate in 643 executions)
• [main] 2 failures in step part-1 (1.3% fail rate in 149 executions)
• [main] 3 failures in pipeline elasticsearch-pull-request (1.9% fail rate in 154 executions)

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

[elasticsearchmachine]

This has been muted on branch main

Mute Reasons:

• [main] 4 failures in class org.elasticsearch.indices.mapping.UpdateMappingIntegrationIT (0.6% fail rate in 643 executions)
• [main] 2 failures in step part-1 (1.3% fail rate in 149 executions)
• [main] 3 failures in pipeline elasticsearch-pull-request (1.9% fail rate in 154 executions)

Build Scans:

• elasticsearch-periodic #3938 / single-processor-node-tests
• elasticsearch-pull-request #29721 / part-1
• elasticsearch-pull-request #29602 / part-1-fips
• elasticsearch-pull-request #29418 / part-1

[elasticsearchmachine]

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

[prdoyle]

Sending to Search because the test is in org.elasticsearch.indices.mapping.