[CI] StandardVersusStandardReindexedIntoLogsDbChallengeRestIT testFieldCaps failing

[elasticsearchmachine]

Build Scans:

• elasticsearch-periodic #5888 / openjdk21_checkpart1_java-matrix
• elasticsearch-periodic-platform-support #5832 / ubuntu-2004-aarch64_checkpart1_platform-support-arm

Reproduction Line:

./gradlew ":modules:data-streams:javaRestTest" --tests "org.elasticsearch.datastreams.logsdb.qa.StandardVersusStandardReindexedIntoLogsDbChallengeRestIT.testFieldCaps" -Dtests.seed=49D9DA3801B6FF0A -Dtests.locale=mai-IN -Dtests.timezone=Africa/Brazzaville -Druntime.java=21

Applicable branches:
8.16

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

java.lang.AssertionError: Error [Actual does not equal expected, actual: {@timestamp={date={type=date, metadata_field=false, searchable=true, aggregatable=true}}, Afb={long={type=long, metadata_field=false, searchable=true, aggregatable=true}}, DIQcqxv={integer={type=integer, metadata_field=false, searchable=true, aggregatable=true}}, FOHyCpG={half_float={type=half_float, metadata_field=false, searchable=true, aggregatable=true}}, GE={short={type=short, metadata_field=false, searchable=true, aggregatable=false}}, GVJVlSEI={unsigned_long={type=unsigned_long, metadata_field=false, searchable=false, aggregatable=true}}, GqDjCTJXgV={long={type=long, metadata_field=false, searchable=true, aggregatable=true}}, HqsNjtrBQT={long={type=long, metadata_field=false, searchable=true, aggregatable=true}}, IK={double={type=double, metadata_field=false, searchable=true, aggregatable=true}}, IMMPDjWs={keyword={type=keyword, metadata_field=false, searchable=true, aggregatable=false}}, JKeo={long={type=l
[truncated]

Issue Reasons:

• [8.16] 2 failures in test testFieldCaps (0.8% fail rate in 266 executions)

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

[elasticsearchmachine]

Pinging @elastic/es-storage-engine (Team:StorageEngine)