OutOfMemoryError during compilation

[beikov]

We recently started getting out of memory errors on our s390x machine during the compilation of Hibernate ORM. Maybe it's a bug in the IBM Java runtime? We even tried temporarily increasing the maximum memory from 2GB to 3GB, but that still didn't help. It works fine on x86 with 2GB.

Here is the latest failed run: https://ci.hibernate.org/job/hibernate-orm-pipeline/job/main/2330/execution/node/79/log/

We use the following JVM: https://github.com/ibmruntimes/semeru11-binaries/releases/download/jdk-11.0.12.0-certified/ibm-semeru-certified-11-jdk-11.0-12.0.s390x.rpm

Building Hibernate ORM with ./gradlew clean check -Plog-test-progress=true --stacktrace