1.
Server Environment
OS: Centos 6
JDK: 1.6.0_30
Akka: 2.1.4
1.
Crash Description
Recently, our production server encountered IOManagerActor restart caused
by (IOException: Connection timed out) when it is trying to write message
to the socket, however we are not able to reproduce it in our development
environment, we have tried to run more concurrent users and disconnected
the cable in the middle of process in order to produce tcp timeout, but
none of them produced desired error.
In production we encountered the incident twice and we took a look at the
log stack trace, it showed the exception which caused the restart is on def
write in IOManagerActor:
at
akka.actor.IOManagerActor.akka$actor$IOManagerActor$$write(IO.scala:1180)
~[akka-actor_2.10-2.1.4.jar:na]
1.
StackTrace Log
[ERROR] [2015-04-01 17:16:49.796] [akka.actor.default-dispatcher-16]
[akka.actor.IOManagerActor] Connection timed out
java.io.IOException: Connection timed out
at sun.nio.ch.FileDispatcher.write0(Native Method) ~[na:1.6.0_30]
at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:47)
~[na:1.6.0_30]
at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:122)
~[na:1.6.0_30]
at sun.nio.ch.IOUtil.write(IOUtil.java:93) ~[na:1.6.0_30]
at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:352)
~[na:1.6.0_30]
at akka.actor.WriteBuffer.run$2(IO.scala:1221)
~[akka-actor_2.10-2.1.4.jar:na]
at akka.actor.WriteBuffer.write(IO.scala:1236)
~[akka-actor_2.10-2.1.4.jar:na]
at
akka.actor.IOManagerActor.akka$actor$IOManagerActor$$write(IO.scala:1180)
~[akka-actor_2.10-2.1.4.jar:na]
at
akka.actor.IOManagerActor$$anonfun$receive$1.applyOrElse(IO.scala:1076)
~[akka-actor_2.10-2.1.4.jar:na]
at akka.actor.ActorCell.receiveMessage(ActorCell.scala:425)
~[akka-actor_2.10-2.1.4.jar:na]
at akka.actor.ActorCell.invoke(ActorCell.scala:386)
~[akka-actor_2.10-2.1.4.jar:na]
at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:230)
~[akka-actor_2.10-2.1.4.jar:na]
at akka.dispatch.Mailbox.run(Mailbox.scala:212)
~[akka-actor_2.10-2.1.4.jar:na]
at
akka.dispatch.ForkJoinExecutorConfigurator$MailboxExecutionTask.exec(AbstractDispatcher.scala:506)
~[akka-actor_2.10-2.1.4.jar:na]
at
scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
~[scala-library-2.10.4.jar:na]
at
scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
~[scala-library-2.10.4.jar:na]
at
scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
~[scala-library-2.10.4.jar:na]
at
scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
~[scala-library-2.10.4.jar:na]
after that IOManager got restarted:
[akka.actor.IOManagerActor] restarting
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