Reproduced by following command. No other logs created. No files created. Java recently updated as a test solution to no avail. Java works otherwise (able to start a 1.6.4 server).
java -Xmx1G -Xms1G -jar minecraft_server.1.7.2.jar nogui
<wait for a few seconds>
Exception in thread "main" java.lang.ExceptionInInitializerError
at net.minecraft.server.MinecraftServer.<init>(SourceFile:114)
at lj.<init>(SourceFile:50)
at net.minecraft.server.MinecraftServer.main(SourceFile:591)
Caused by: java.lang.IllegalStateException: failed to create a child event loop
at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:61)
at io.netty.channel.MultithreadEventLoopGroup.<init>(MultithreadEventLoopGroup.java:49)
at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:61)
at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:52)
at ms.<clinit>(SourceFile:31)
... 3 more
Caused by: io.netty.channel.ChannelException: failed to open a new selector
at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:128)
at io.netty.channel.nio.NioEventLoop.<init>(NioEventLoop.java:120)
at io.netty.channel.nio.NioEventLoopGroup.newChild(NioEventLoopGroup.java:87)
at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:57)
... 7 more
Caused by: java.io.IOException: Function not implemented
at sun.nio.ch.EPollArrayWrapper.epollCreate(Native Method)
at sun.nio.ch.EPollArrayWrapper.<init>(Unknown Source)
at sun.nio.ch.EPollSelectorImpl.<init>(Unknown Source)
at sun.nio.ch.EPollSelectorProvider.openSelector(Unknown Source)
at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:126)
... 10 more
Related issues
Comments
CubeTheThird
migrated
None at all. Not even getting to the point where that is an issue. Server is just not booting. Client (when it gets to that point) is on same network (however, different subnet, but no issues there). Like stated, 1.6.4 works under the same conditions.
CubeTheThird
The reason I ask it because 1.7.* uses a different network system.
migrated
Ah, ok, interesting. However, I'm not getting that far. All I've got is what's above. No other logs anywhere.
CubeTheThird
Just tested it with the same arguments as yours, and it worked fine. Can you try the following: re-downlaod the server.jar, place into a new empty folder and try running it again?
migrated
Ok. Redownloaded. Created empty folder and ran it from there. Same output.
CubeTheThird
Are you using any form of antivirus and/or firewall?
migrated
on the server AV - none, Firewall, yes, but it is wide open to the clients (when it gets to the point to accept clients). Unless the server needs to connect outside before it even outputs to the console, it shouldn't be an issue. However, if that is the case, there is also NAT in place (but it works for everything else).
CubeTheThird
In that case I will mark this as duplicate of MC-34749. Antivirus and firewalls have been causing users problems, and currently disabling them corrects the issue.
migrated
I see some similarities in the error, but I don't see how a firewall would cause function not implemented. Even in the case of 127.0.0.1 being blocked (which it isn't). I'd be interested in knowing the network changes for 1.7.x to indicate this as a suspect.
Nevertheless, thanks for looking into this rather quickly. It's much appreciated.
CubeTheThird
If you are still having difficulty, I would recommend taking a look at are support pages and chat. For technical support please use the Mojang Support Center.
migrated
Not really wanted to reopen this, but i've gotten back to working on this. This is affected for 1.7.4 also. I've read the other threads, and tested the jar file on windows (that works, but not the solution I'm after). I've moved the jar file out of my jails into the root of my server to avoid any problems with localhost. I'm running pf, but explicitly have it ignoring 127.0.0.1. I'm not running any AV. I can throw anything else I want at 127.0.0.1, and it behaves as expected.
I've run tcpdump on the lo0 interface, and got nothing (except my test ping). I can't exactly say this is a firewall or AV problem (as marked as a duplicate) when my firewall is explicitly open, and I'm not running an AV to turn off.
When I get more time and storage, I'll test with a VM to remove the FW completely.
Thanks
kumasasa
Looks like a Kernel compiled without EPOLL:
Caused by: java.io.IOException: Function not implemented
at sun.nio.ch.EPollArrayWrapper.epollCreate(Native Method)Thanks for the the tip. That pointed me in the right direction. As I'm not running linux, I switched the jre to the non-Oracle implementation, and I got the server to start and and now connected. Thanks for the help.
Are you using any less common network schemes, such as proxies or vpns?