[CI] RandomizedTimeSeriesIT testGroupByNothing failing

[elasticsearchmachine]

Build Scans:

• elasticsearch-intake #27158 / part3
• elasticsearch-periodic-platform-support #10137 / rocky-9_platform-support-unix

Reproduction Line:

./gradlew ":x-pack:plugin:esql:internalClusterTest" --tests "org.elasticsearch.xpack.esql.action.RandomizedTimeSeriesIT.testGroupByNothing" -Dtests.seed=3050CE9CE9791881 -Dtests.locale=sa -Dtests.timezone=Australia/LHI -Druntime.java=24

Applicable branches:
main

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

org.elasticsearch.action.bulk.IndexDocFailureStoreStatus$ExceptionWithFailureStoreStatus: [.ds-tsit_ds-2025.08.20-000001/TEfC-UbzS46u74MtBQWqXA][[.ds-tsit_ds-2025.08.20-000001][0]] org.elasticsearch.index.engine.VersionConflictEngineException: [C49S8X6g-QjW9uynAAABmMd3qH4][KBkJUGhjrYx0kKOigCXrLeK0RcVVTL_itQLi69ku_AIJqqsrijofpOU@2025-08-20T12:32:44.670Z]: version conflict, document already exists (current version [1])

Issue Reasons:

• [main] 2 failures in test testGroupByNothing (1.7% fail rate in 118 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] 2 failures in test testGroupByNothing (1.7% fail rate in 118 executions)

Build Scans:

• elasticsearch-intake #27158 / part3
• elasticsearch-periodic-platform-support #10137 / rocky-9_platform-support-unix

[elasticsearchmachine]

Pinging @elastic/es-storage-engine (Team:StorageEngine)

[pabloem]

this is fixed by #133489