funky-eyes opened a new issue, #7620: URL: https://github.com/apache/incubator-seata/issues/7620
### Check Ahead - [x] I have searched the [issues](https://github.com/seata/seata/issues) of this repository and believe that this is not a duplicate. - [ ] I am willing to try to fix this bug myself. ### Ⅰ. Issue Description ``` seata: transport: server: native ``` <img width="1998" height="1074" alt="Image" src="https://github.com/user-attachments/assets/6770bb6e-7d05-470a-bd71-3e72a693a2b7"; /> ``` java.lang.RuntimeException: Server start failed at org.apache.seata.core.rpc.netty.NettyServerBootstrap.start(NettyServerBootstrap.java:210) at org.apache.seata.core.rpc.netty.AbstractNettyRemotingServer.init(AbstractNettyRemotingServer.java:61) at org.apache.seata.core.rpc.netty.NettyRemotingServer.init(NettyRemotingServer.java:63) at org.apache.seata.server.Server.start(Server.java:112) at org.apache.seata.server.ServerRunner.run(ServerRunner.java:62) at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:765) at org.springframework.boot.SpringApplication.lambda$callRunners$2(SpringApplication.java:749) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.SortedOps$SizedRefSortingSink.end(SortedOps.java:357) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:510) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:744) at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1300) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1289) at org.apache.seata.server.ServerApplication.main(ServerApplication.java:30) Caused by: io.netty.channel.ChannelException: Unable to create Channel from class class io.netty.channel.kqueue.KQueueServerSocketChannel at io.netty.channel.ReflectiveChannelFactory.newChannel(ReflectiveChannelFactory.java:46) at io.netty.bootstrap.AbstractBootstrap.initAndRegister(AbstractBootstrap.java:326) at io.netty.bootstrap.AbstractBootstrap.doBind(AbstractBootstrap.java:288) at io.netty.bootstrap.AbstractBootstrap.bind(AbstractBootstrap.java:284) at io.netty.bootstrap.AbstractBootstrap.bind(AbstractBootstrap.java:262) at org.apache.seata.core.rpc.netty.NettyServerBootstrap.start(NettyServerBootstrap.java:196) ... 19 common frames omitted Caused by: java.lang.reflect.InvocationTargetException: null at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:74) at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:502) at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:486) at io.netty.channel.ReflectiveChannelFactory.newChannel(ReflectiveChannelFactory.java:44) ... 24 common frames omitted Caused by: java.lang.UnsatisfiedLinkError: 'int io.netty.channel.unix.Socket.newSocketStreamFd(boolean)' at io.netty.channel.unix.Socket.newSocketStreamFd(Native Method) at io.netty.channel.unix.Socket.newSocketStream0(Socket.java:596) at io.netty.channel.unix.Socket.newSocketStream0(Socket.java:588) at io.netty.channel.kqueue.BsdSocket.newSocketStream(BsdSocket.java:197) at io.netty.channel.kqueue.KQueueServerSocketChannel.<init>(KQueueServerSocketChannel.java:34) at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) ... 27 common frames omitted <== ``` ### Ⅱ. Describe what happened Because KQueueServerSocketChannel requires a KQueueEventLoopGroup to be created first so that the JNI library in netty-transport-native-kqueue can be loaded, otherwise you will get an UnsatisfiedLinkError. So the fix is to use the matching event loop group for the corresponding socket channel. Note that even if a KQueueServerSocketChannel can be instantiated (for example, you create a KQueueEventLoopGroup but don’t actually use it), it may construct successfully yet remain incompatible with a NioEventLoopGroup. For example: ``` @Override public void start() { int port = getListenPort(); new KQueueEventLoopGroup(); this.serverBootstrap .group(this.eventLoopGroupBoss, this.eventLoopGroupWorker) .channel(NettyServerConfig.SERVER_CHANNEL_CLAZZ) .option(ChannelOption.SO_BACKLOG, nettyServerConfig.getSoBackLogSize()) .option(ChannelOption.SO_REUSEADDR, true) .childOption(ChannelOption.SO_KEEPALIVE, true) .childOption(ChannelOption.TCP_NODELAY, true) .childOption(ChannelOption.SO_SNDBUF, nettyServerConfig.getServerSocketSendBufSize()) .childOption(ChannelOption.SO_RCVBUF, nettyServerConfig.getServerSocketResvBufSize()) .childOption( ChannelOption.WRITE_BUFFER_WATER_MARK, new WriteBufferWaterMark( nettyServerConfig.getWriteBufferLowWaterMark(), nettyServerConfig.getWriteBufferHighWaterMark())) .localAddress(new InetSocketAddress(port)) .childHandler(new ChannelInitializer<SocketChannel>() { @Override public void initChannel(SocketChannel ch) { ch.pipeline() .addLast(new IdleStateHandler(nettyServerConfig.getChannelMaxReadIdleSeconds(), 0, 0)) .addLast(new ProtocolDetectHandler(new ProtocolDetector[] { new Http2Detector(getChannelHandlers()), new SeataDetector(getChannelHandlers()), new HttpDetector() })); } }); try { this.serverBootstrap.bind(port).sync(); LOGGER.info("Server started, service listen port: {}", getListenPort()); Instance instance = Instance.getInstance(); // Lines 177-180 are just for compatibility with test cases if (instance.getTransaction() == null) { Instance.getInstance().setTransaction(new Node.Endpoint(XID.getIpAddress(), XID.getPort(), "netty")); } for (RegistryService<?> registryService : MultiRegistryFactory.getInstances()) { registryService.register(Instance.getInstance()); } initialized.set(true); } catch (SocketException se) { throw new RuntimeException("Server start failed, the listen port: " + getListenPort(), se); } catch (Exception exx) { throw new RuntimeException("Server start failed", exx); } } ``` <img width="1950" height="1200" alt="Image" src="https://github.com/user-attachments/assets/f4443c5b-d067-4367-b497-2d2fc8ee773a"; /> As shown in the screenshot, you'll then see the following new exception message: ``` ==> java.lang.RuntimeException: Server start failed at org.apache.seata.core.rpc.netty.NettyServerBootstrap.start(NettyServerBootstrap.java:211) at org.apache.seata.core.rpc.netty.AbstractNettyRemotingServer.init(AbstractNettyRemotingServer.java:61) at org.apache.seata.core.rpc.netty.NettyRemotingServer.init(NettyRemotingServer.java:63) at org.apache.seata.server.Server.start(Server.java:112) at org.apache.seata.server.ServerRunner.run(ServerRunner.java:62) at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:765) at org.springframework.boot.SpringApplication.lambda$callRunners$2(SpringApplication.java:749) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.SortedOps$SizedRefSortingSink.end(SortedOps.java:357) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:510) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:744) at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1300) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1289) at org.apache.seata.server.ServerApplication.main(ServerApplication.java:30) Caused by: java.lang.IllegalStateException: incompatible event loop type: io.netty.channel.nio.NioEventLoop at io.netty.channel.AbstractChannel$AbstractUnsafe.register(AbstractChannel.java:473) at io.netty.channel.SingleThreadEventLoop.register(SingleThreadEventLoop.java:89) at io.netty.channel.SingleThreadEventLoop.register(SingleThreadEventLoop.java:83) at io.netty.channel.MultithreadEventLoopGroup.register(MultithreadEventLoopGroup.java:86) at io.netty.bootstrap.AbstractBootstrap.initAndRegister(AbstractBootstrap.java:339) at io.netty.bootstrap.AbstractBootstrap.doBind(AbstractBootstrap.java:288) at io.netty.bootstrap.AbstractBootstrap.bind(AbstractBootstrap.java:284) at io.netty.bootstrap.AbstractBootstrap.bind(AbstractBootstrap.java:262) at org.apache.seata.core.rpc.netty.NettyServerBootstrap.start(NettyServerBootstrap.java:197) ... 19 common frames omitted <== ``` ### Ⅲ. Describe what you expected to happen _No response_ ### Ⅳ. How to reproduce it (as minimally and precisely as possible) Add configuration ``` seata: transport: server: native ``` start server ### Ⅴ. Anything else we need to know? I don't think there's any need to provide platform-specific SocketChannel and EventLoop implementations for non‑Linux systems; non‑Linux platforms should all use the NIO implementation to avoid added maintenance and operational costs. ### Ⅵ. Environment _No response_ -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
