Notes

ListType cannot be Converted to Java.lang.Comparable

Make use of Git to checkout SVN through the web URL



Our CLI allows you to work faster. Find out more.



- Open using GitHub Desktop – Download ZIP



Launching GitHub Desktop



Try again if nothing happens.



Launching Xcode



Try again if nothing changes.



Launching Visual Studio Code



Your codespace will open once you are ready.



There was a problem in preparing your codespace. Please try again.



Latest commit



Git statistics



- 2 commits



Files



README.md



Native Minecraft Servers using GraalVM Native Image



The Minecraft server is known to require a lot of CPU and memory resources and can be hard to deploy. This project allows you to compile the Minecraft server into an independent executable that is self-contained with the help of GraalVM Native Image. It is expected to make use of less CPU and memory resources, be quicker to start, and be more simple to deploy.



A native Minecraft server is less than 120MB in size and, with that, significantly smaller than Minecraft's server.jar plus a JDK required to run it. With upx compression the size of the native executable may be reduced further to less than 40MB which is smaller than just the server.jar. Initial tests also showed a competitive run-time and a smaller memory footprint. To get the best results, build with GraalVM Enterprise Native Image which provides better performance and lower memory usage than the Community Edition, and try using the G1 GC and Profile-Guided Optimizations. The Oracle Cloud Free Tier not only offers four Ampere A1 cores and 24 GB of RAM that is always free, which is plenty for hosting a Minecraft server, but also free access to GraalVM Enterprise.



Check out this blog post for more details.



Disclaimer: This project is meant for demonstration purposes only and intended to help the Minecraft community evaluate the use of GraalVM Native Image. Use at your own risk.



1. Download GraalVM Community or Enterprise (GraalVM 22.2.0 or later is required). Optional: make sure upx is installed on your $PATH in order to enable compression. 2. Download or visit this repository and run build.sh. 3. Launch the native Minecraft server with ./native-minecraft-server. The first time you use the server, you will have to follow the regular procedure of accepting Minecraft's EULA.



How does it work



This project is only the build.sh script and reachability metadata for creating a native Minecraft server. The build.sh script downloads Minecraft's server.jar and then extracts jars as well as other resources from it. Minecraft Servers Then, it calls GraalVM Native Image using an appropriate configuration to generate an original version of the Minecraft server. Finally, and only if upx is on the $PATH script, it will compress the native executable.



Limitations and Known Issues



- The configuration currently only supports Minecraft 1.18.2. - The server GUI is not yet supported. Mods are not supported currently. There isn't yet a build script available for Windows however, the WSL should be able to work. The native executable occasionally fails to start upon startup. It is typically possible to restart it multiple times. Error: com.mojang.datafixers.types.templates.List$ListType cannot be cast to java.lang.Comparable.


Read More: https://minecraft-servers.info/