[CI] Netty4HttpPipeliningHandlerTests testSmallFullResponsesAreSentDirectly failing

[elasticsearchmachine]

Build Scans:

• elasticsearch-periodic #11478 / openjdk23_checkpart1_java-matrix
• elasticsearch-periodic #11478 / openjdk23_checkpart1_java-matrix

Reproduction Line:

./gradlew ":modules:transport-netty4:test" --tests "org.elasticsearch.http.netty4.Netty4HttpPipeliningHandlerTests.testSmallFullResponsesAreSentDirectly" -Dtests.seed=295F23248D347581 -Dtests.locale=rwk-Latn-TZ -Dtests.timezone=Pacific/Kanton -Druntime.java=23

Applicable branches:
8.19

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

java.lang.IllegalArgumentException: maxNumComponents: 0 (expected: >= 1)

Issue Reasons:

• [8.19] 2 consecutive failures in test testSmallFullResponsesAreSentDirectly
• [8.19] 2 failures in test testSmallFullResponsesAreSentDirectly (3.2% fail rate in 62 executions)

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

[elasticsearchmachine]

Pinging @elastic/es-distributed-coordination (Team:Distributed Coordination)