Bug: OutOfMemory when using Maven and identation size 4

[cwichoski]

Discussed in #10111

^{Originally posted by cwichoski June 19, 2024}
Hi

I build and run jhipster and got OutOfMemory error, then changed to increase memory to 4Gb with follow command:

jhipster-lite$ java -Xmx4096m -Xms4096m -jar target/*.jar

but still getting OutOfMemory when try to generate the code.

Here is the partial exception

java.lang.OutOfMemoryError: Java heap space
	at java.base/java.util.Arrays.copyOf(Arrays.java:3595)
	at java.base/java.lang.StringLatin1.replace(StringLatin1.java:345)
	at java.base/java.lang.String.replace(String.java:3100)
	at tech.jhipster.lite.module.infrastructure.secondary.javadependency.maven.MavenCommandHandler.applyIndentation(MavenCommandHandler.java:447)
	at tech.jhipster.lite.module.infrastructure.secondary.javadependency.maven.MavenCommandHandler.writePom(MavenCommandHandler.java:437)
	at tech.jhipster.lite.module.infrastructure.secondary.javadependency.maven.MavenCommandHandler.addDependencyTo(MavenCommandHandler.java:279)
	at tech.jhipster.lite.module.infrastructure.secondary.javadependency.maven.MavenCommandHandler.handle(MavenCommandHandler.java:268)
	at tech.jhipster.lite.module.infrastructure.secondary.javadependency.FileSystemJavaBuildCommandsHandler.handle(FileSystemJavaBuildCommandsHandler.java:76)
	at tech.jhipster.lite.module.infrastructure.secondary.javadependency.FileSystemJavaBuildCommandsHandler.lambda$handle$0(FileSystemJavaBuildCommandsHandler.java:51)

I'm using:

branch main
JDK 21.0.3-tem
maven 3.9.7
nodejs 18.16.0

Any idea?

[cwichoski]

I found a solution and going to provide a pull request

[cwichoski]

I pushed a solution here [1] but I'm with difficult to understand what jacoco needs me to test more, as it's my first time using a project with jacoco and with 100% of code coverage needed, anyone have a clue what more I need to test?

[INFO] Analyzed bundle 'jhlite' with 815 classes
[WARNING] Rule violated for class tech.jhipster.lite.module.infrastructure.secondary.javadependency.maven.MavenCommandHandler: lines covered ratio is 0.99, but expected minimum is 1.00

[1] main...cwichoski:jhipster-lite:bug10129

[renanfranca]

anyone have a clue what more I need to test?

@cwichoski : After running ./mvnw clean verify, go to the target/site/jacoco folder and open the index.html file, which shows the coverage for every package. Navigate to your class and see what is missing to test.

[pascalgrimaud]

I'm adding a bounty on this important ticket
as @murdos and @cwichoski worked a lot on this, you can share the bounty plz