[CI] StoredFieldsSequentialIT testFetchTen failing

[elasticsearchmachine]

Build Scans:

• elasticsearch-periodic-platform-support #8956 / windows-2019_checkpart3_platform-support-windows
• elasticsearch-pull-request #76940 / part-3

Reproduction Line:

gradlew ":x-pack:plugin:esql:qa:server:single-node:javaRestTest" --tests "org.elasticsearch.xpack.esql.qa.single_node.StoredFieldsSequentialIT.testFetchTen" -Dtests.seed=2A05949FC4FEE96B -Dtests.locale=ksf -Dtests.timezone=Europe/Ulyanovsk -Druntime.java=24

Applicable branches:
8.19

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

java.lang.AssertionError: Expected a map containing
                                                        operator: "ValuesSourceReaderOperator[fields = [i, test, test.keyword]]"
                                                          status: a map containing
                                                     readers_built: a map containing
     stored_fields[requires_source:true, fields:0, sequential: true]: expected a value equal to or greater than <1> but was <missing>
              i:column_at_a_time:BlockDocValuesReader.SingletonLongs: <2> unexpected but ok
                                          test:column_at_a_time:null: <2> unexpected but ok
    stored_fields[requires_source:true, fields:0, sequential: false]: <2> unexpected but ok
test.keyword:column_at_a_time:BlockDocValuesReader.SingletonOrdinals: <2> unexpected but ok
                             test:row_stride:BlockSourceReader.Bytes: <2> unexpected but ok
                                                   pages_
[truncated]

Issue Reasons:

• [8.19] 2 failures in test testFetchTen (1.0% fail rate in 202 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)

[nik9000]

I believe this one is a "more segments than I expected" problem. I'm going to try to reproduce. Given the way the test is written it won't reproduce with -Dtests.iters - so while it is!