After migrating to 23.1.0 we've hit an issue stopping

Another workaround is to use: <div class="snippet-clipboard-content notranslate po

[23.1.0] Error creating a GraalJS Engine in a Spring Boot app about graaljs HOT 4 CLOSED

vmutafov commented on September 20, 2024

[23.1.0] Error creating a GraalJS Engine in a Spring Boot app

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Comments (4)

chumer commented on September 20, 2024 2

I can reproduce this problem. It looks like we do not handle spring boot style jars with multiple embedded jars very well currently.

A workaround can be to run using mvn spring-boot:run.
That should work.

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chumer commented on September 20, 2024 1

Another workaround is to use:

java -Dpolyglotimpl.DisableClassPathIsolation=true -jar ./target/polyglot-demo-0.0.1-SNAPSHOT.jar

However that gets you this warning:

[engine] WARNING: The polyglot engine uses a fallback runtime that does not support runtime compilation to native code.
Execution without runtime compilation will negatively impact the guest application performance.
The following cause was found: Truffle was loaded from the class-path. Use Truffle from the module-path instead. Did you disable polyglot class-path isolation?
For more information see: https://www.graalvm.org/latest/reference-manual/embed-languages/.
To disable this warning use the '--engine.WarnInterpreterOnly=false' option or the '-Dpolyglot.engine.WarnInterpreterOnly=false' system property.

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chumer commented on September 20, 2024

I talked to the spring-boot guys, and they recommend using executable jars.
That is not even a workaround, but also what is best for performance.
https://docs.spring.io/spring-boot/docs/current/reference/html/deployment.html#deployment.efficient.unpacking

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chumer commented on September 20, 2024

23.1.2 fixes this problem. Make sure you also bump the version of your GraalVM JDK 21 to 21.0.2 as well!

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