[CI] CompositeAggregatorTests testRandomLongs failing

[martijnvg]

Build scan:
https://gradle-enterprise.elastic.co/s/uqiesaacvzq7g/tests/:server:test/org.elasticsearch.search.aggregations.bucket.composite.CompositeAggregatorTests/testRandomLongs

Reproduction line:
./gradlew ':server:test' --tests "org.elasticsearch.search.aggregations.bucket.composite.CompositeAggregatorTests.testRandomLongs" -Dtests.seed=DB61B511F6F236FA -Dtests.locale=de-CH -Dtests.timezone=Antarctica/Casey -Druntime.java=11

Applicable branches:
master

Reproduces locally?:
Yes

Failure history:
https://gradle-enterprise.elastic.co/scans/tests?tests.container=org.elasticsearch.search.aggregations.bucket.composite.CompositeAggregatorTests&tests.test=testRandomLongs

Failure excerpt:

java.lang.OutOfMemoryError: Java heap space

[elasticmachine]

Pinging @elastic/es-analytics-geo (Team:Analytics)

[ywangd]

This failure for CompositeAggregatorTests.testRandomStrings is likely due to the same underlying issue. Error message is:

java.lang.OutOfMemoryError: Java heap space

Build scan: https://gradle-enterprise.elastic.co/s/y2zillkv3lvw6/tests/:server:test/org.elasticsearch.search.aggregations.bucket.composite.CompositeAggregatorTests/testRandomStrings?top-execution=1

Reproducible locally with :

./gradlew ':server:test' --tests "org.elasticsearch.search.aggregations.bucket.composite.CompositeAggregatorTests.testRandomStrings" -Dtests.seed=8E4872DF11193E13 -Dtests.locale=it -Dtests.timezone=Asia/Qatar -Druntime.java=11