Error: Unsupported method java.lang.Object.wait0(long) is reachable - During Native Image Build.

[nitinty]

Hi Team,

I’m encountering an issue while using Redisson Cache in my Quarkus application during the native image build. The application works perfectly fine in JVM mode, but when I attempt to build it as a native image, I get the following error:

Error: java.util.concurrent.ExecutionException: org.graalvm.compiler.debug.GraalError: com.oracle.svm.hosted.substitute.DeletedElementException: Unsupported method java.lang.Object.wait0(long) is reachable
com.oracle.graal.pointsto.util.AnalysisError: java.util.concurrent.ExecutionException: org.graalvm.compiler.debug.GraalError: com.oracle.svm.hosted.substitute.DeletedElementException: Unsupported method java.lang.Object.wait0(long) is reachable
To diagnose the issue, you can add the option --report-unsupported-elements-at-runtime. The unsupported element is then reported at run time when it is accessed the first time.
at org.graalvm.nativeimage.pointsto/com.oracle.graal.pointsto.util.AnalysisError.shouldNotReachHere(AnalysisError.java:169)
at org.graalvm.nativeimage.pointsto/com.oracle.graal.pointsto.util.AnalysisFuture.ensureDone(AnalysisFuture.java:66)

I’ve tried this with both the below versions separately, but the issue persists. Could you please assist in resolving this?

<dependency>
    <groupId>org.redisson</groupId>
    <!-- for Quarkus v3.x.x -->
    <artifactId>redisson-quarkus-30-cache</artifactId>
    <version>3.38.1</version>
</dependency>

and 

<dependency>
    <groupId>org.redisson</groupId>
    <artifactId>redisson-quarkus-30</artifactId>
    <version>3.31.0</version>
</dependency>

I have already raised this issue with the Redisson team but wanted to share it here as well in case anyone can assist.

redisson/redisson#6411

[nitinty]

@zakkak @geoand
Could you please assist with this or tag someone who might be able to help ?

[geoand]

Although @zakkak might be able to provide some high level help, keep in mind that redisson is not supported by Quarkus itself

[nitinty]

Yes, I'm aware. I just wanted to check if there's any way to instruct the native image builder to retain specific methods during the build process to avoid such issues ?

[zakkak]

No there's no way to achieve this. wait0 is explicitly removed and not supported.

Following the instructions in #45580 (comment) might help you figure out what's causing it which might then help you create a work around.