Strange exception in / var / log / cassandra / system.log
Unexpected errors in the Cassandra logs have not yet been traced back to the underlying cause. What component is Netty using, or is this a well-known issue? (could not find information)
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]
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2 answers
If you are using the Gocql driver for Cassandra, and having received this, see if the keepAlive parameter will add this solution to the Connection configuration. A read timeout was occurring and this configuration helped us
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
}
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