[CI] CsvTests test {csv-spec:string.MvStringNotEqualsFound} failing

[elasticsearchmachine]

Build Scans:

• elasticsearch-intake #26846 / part3
• elasticsearch-intake #26810 / part3

Reproduction Line:

./gradlew ":x-pack:plugin:esql:test" --tests "org.elasticsearch.xpack.esql.CsvTests" -Dtests.method="test {csv-spec:string.MvStringNotEqualsFound}" -Dtests.seed=650E7F6FF63E4BAA -Dtests.locale=bm-ML -Dtests.timezone=Pacific/Truk -Druntime.java=24

Applicable branches:
main

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

java.lang.AssertionError: Expected a list containing
0: expected "Line 2:9: evaluation of [message != \\\"Connected to 10.1.0.1\\\"] failed, treating result as null. Only first 20 failures recorded." but was <missing>
1: expected "Line 2:9: java.lang.IllegalArgumentException: single-value function encountered multi-value" but was <missing>

Issue Reasons:

• [main] 2 failures in test test {csv-spec:string.MvStringNotEqualsFound} (0.9% fail rate in 228 executions)
• [main] 2 failures in step part3 (4.0% fail rate in 50 executions)
• [main] 2 failures in pipeline elasticsearch-intake (4.0% fail rate in 50 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 test {csv-spec:string.MvStringNotEqualsFound} (0.9% fail rate in 228 executions)
• [main] 2 failures in step part3 (4.0% fail rate in 50 executions)
• [main] 2 failures in pipeline elasticsearch-intake (4.0% fail rate in 50 executions)

Build Scans:

• elasticsearch-intake #26846 / part3
• elasticsearch-intake #26810 / part3

[elasticsearchmachine]

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

[idegtiarenko]

Closed by #132843