[CI] EsqlSpecIT class failing

[elasticsearchmachine]

Build Scans:

• elasticsearch-periodic-platform-support #10657 / almalinux-8-aarch64_checkpart3_platform-support-arm
• elasticsearch-pull-request #92251 / part-3
• elasticsearch-periodic-platform-support #10615 / almalinux-8-aarch64_checkpart3_platform-support-arm
• elasticsearch-periodic-platform-support #10603 / ubuntu-2404-aarch64_checkpart3_platform-support-arm
• elasticsearch-periodic-platform-support #10585 / ubuntu-2404-aarch64_checkpart3_platform-support-arm
• elasticsearch-periodic-platform-support #10537 / almalinux-8-aarch64_checkpart3_platform-support-arm

Reproduction Line:

./gradlew ":x-pack:plugin:esql:qa:server:multi-node:javaRestTest" --tests "org.elasticsearch.xpack.esql.qa.multi_node.EsqlSpecIT" -Dtests.method="test {stats.MinOfTextGrouping SYNC}" -Dtests.seed=35339F751568DCF7 -Dtests.locale=en-BM -Dtests.timezone=America/Lower_Princes -Druntime.java=24

Applicable branches:
8.18

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

java.net.ConnectException: Connection refused

Issue Reasons:

• [8.18] 6 failures in class org.elasticsearch.xpack.esql.qa.multi_node.EsqlSpecIT (0.9% fail rate in 698 executions)
• [8.18] 3 failures in step almalinux-8-aarch64_checkpart3_platform-support-arm (14.3% fail rate in 21 executions)
• [8.18] 2 failures in step ubuntu-2404-aarch64_checkpart3_platform-support-arm (9.5% fail rate in 21 executions)
• [8.18] 5 failures in pipeline elasticsearch-periodic-platform-support (23.8% fail rate in 21 executions)

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

[elasticsearchmachine]

Pinging @elastic/es-analytical-engine (Team:Analytics)

[astefan]

@limotova this seems to be another facet of #134244. Assigning this one to you, but would be preferable to look into this ones with priority as they seem to affect more and more IT tests.

[limotova]

I just got back from PTO so I didn't get a chance to look at them but I plan to look today