Question

Cassandra日志中出现意外错误，尚未能够追溯到底层原因。什么组件利用Netty，或者这个问题众所周知？（无法找到任何信息）

INFO  [SharedPool-Worker-1] 2016-05-18 13:47:41,004  Message.java:532 - Unexpected exception during request; channel = [id: 0xe93fe01e, /40.68.XX.XXX:50818 :> /10.1.XX.X:9042]
io.netty.channel.unix.Errors$NativeIoException: readAddress() failed: Connection timed out
        at io.netty.channel.unix.Errors.newIOException(Errors.java:105) ~[netty-all-4.0.34.Final.jar:4.0.34.Final]
        at io.netty.channel.unix.Errors.ioResult(Errors.java:121) ~[netty-all-4.0.34.Final.jar:4.0.34.Final]
        at io.netty.channel.unix.FileDescriptor.readAddress(FileDescriptor.java:134) ~[netty-all-4.0.34.Final.jar:4.0.34.Final]
        at io.netty.channel.epoll.AbstractEpollChannel.doReadBytes(AbstractEpollChannel.java:239) ~[netty-all-4.0.34.Final.jar:4.0.34.Final]
        at io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:822) ~[netty-all-4.0.34.Final.jar:4.0.34.Final]
        at io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:348) ~[netty-all-4.0.34.Final.jar:4.0.34.Final]
        at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:264) ~[netty-all-4.0.34.Final.jar:4.0.34.Final]
        at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:112) ~[netty-all-4.0.34.Final.jar:4.0.34.Final]
        at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:137) ~[netty-all-4.0.34.Final.jar:4.0.34.Final]
        at java.lang.Thread.run(Thread.java:745) [na:1.8.0_91]

Answer 1

如果您正在使用Cassandra的Gocql驱动程序并获取此信息，请参阅将ConnectionAlive设置添加到Connection配置是否可以解决此问题。读取超时正在发生，此配置帮助我们

type ConnConfig
type ConnConfig struct {
    ProtoVersion   int
    CQLVersion     string
    Timeout        time.Duration
    ConnectTimeout time.Duration
    Compressor     Compressor
    Authenticator  Authenticator
    Keepalive      time.Duration
    // contains filtered or unexported fields
}

https://godoc.org/github.com/gocql/gocql

Answer 2

似乎较新的NETTY版本更冗长，但无论如何它都是无害的INFO消息 - 如果您不想看到它，可以更改您的logback配置。

/var/log/cassandra/system.log中的奇怪异常

2 个答案: