[CI] CrossClusterAsyncSearchIT testCancellationViaTimeoutWithAllowPartialResultsSetToFalse failing

[elasticsearchmachine]

Build Scans:

• elasticsearch-periodic #8281 / openjdk23_checkpart2_java-matrix
• elasticsearch-periodic #8179 / openjdk23_checkpart2_java-matrix

Reproduction Line:

./gradlew ":x-pack:plugin:async-search:internalClusterTest" --tests "org.elasticsearch.xpack.search.CrossClusterAsyncSearchIT.testClusterDetailsAfterSuccessfulCCS" -Dtests.seed=A2A54F3AECC5CC29 -Dtests.locale=en-ZW -Dtests.timezone=Indian/Chagos -Druntime.java=23

Applicable branches:
9.0

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

java.lang.AssertionError: 
Expected: <0>
     but: was <1>

Issue Reasons:

• [9.0] 2 failures in test testCancellationViaTimeoutWithAllowPartialResultsSetToFalse (0.5% fail rate in 423 executions)
• [9.0] 2 failures in step openjdk23_checkpart2_java-matrix (11.1% fail rate in 18 executions)
• [9.0] 2 failures in pipeline elasticsearch-periodic (11.1% fail rate in 18 executions)

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

[elasticsearchmachine]

Pinging @elastic/es-search-foundations (Team:Search Foundations)

[smalyshev]

Seems to be happening only for 8.17 and 8.19 for some reason.

[elasticsearchmachine]

This has been muted on branch main

Mute Reasons:

• [main] 2 failures in test testCancellationViaTimeoutWithAllowPartialResultsSetToFalse (1.9% fail rate in 107 executions)

Build Scans:

• elasticsearch-periodic-platform-support #8015 / windows-2022_checkpart2_platform-support-windows
• elasticsearch-pull-request #70388 / part-2