Build Scans:

• elasticsearch-intake #36076 / part1
• elasticsearch-intake #36075 / part1
• elasticsearch-pull-request #129010 / part-1
• elasticsearch-pull-request #128869 / part-1

Reproduction Line:

./gradlew ":server:test" --tests "org.elasticsearch.action.bulk.TransportBulkActionTests.testProhibitAppendWritesInBackingIndicesSkippedForSeqNoDisabled" -Dtests.seed=ECFD5A0D3D644F88 -Dtests.locale=ja -Dtests.timezone=Africa/Addis_Ababa -Druntime.java=25

Applicable branches:
main

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

java.lang.IllegalArgumentException: index request with op_type=index and no if_primary_term and if_seq_no set targeting backing indices is disallowed, target corresponding data stream [logs-foobar] instead

Issue Reasons:

• [main] 2 consecutive failures in step part1
• [main] 2 consecutive failures in pipeline elasticsearch-intake
• [main] 4 failures in test testProhibitAppendWritesInBackingIndicesSkippedForSeqNoDisabled (1.3% fail rate in 319 executions)
• [main] 2 failures in step part1 (3.8% fail rate in 52 executions)
• [main] 2 failures in step part-1 (0.9% fail rate in 224 executions)
• [main] 2 failures in pipeline elasticsearch-intake (3.8% fail rate in 52 executions)
• [main] 2 failures in pipeline elasticsearch-pull-request (0.9% fail rate in 218 executions)

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