I suppose it means what it says, that you it can't connect, but that's strange to be unable to connect to a port on localhost.
What if you "telnet localhost 9999" and type some text? does it show up in the nc output? if not, it's some other problem locally, like a firewall, or nc not running, or not actually running all this on one host, etc. On Thu, Nov 13, 2014 at 10:06 AM, Niko Gamulin <niko.gamu...@gmail.com> wrote: > Hi, > > I have tried to run basic streaming example > (https://spark.apache.org/docs/1.1.0/streaming-programming-guide.html) > > I have established two ssh connections to the machine where spark is > installed. In one terminal, I have started netcat with command > > nc -lk 9999 > > In other terminal I have run the command > > ./bin/run-example streaming.NetworkWordCount localhost 9999 > > I get the following error and haven't managed to diagnose the cause: > > 14/11/13 13:03:43 ERROR ReceiverTracker: Deregistered receiver for stream 0: > Restarting receiver with delay 2000ms: Error connecting to localhost:9999 - > java.net.ConnectException: Connection refused > at java.net.PlainSocketImpl.socketConnect(Native Method) > at > java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339) > at > java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200) > at > java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182) > at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:391) > at java.net.Socket.connect(Socket.java:579) > at java.net.Socket.connect(Socket.java:528) > at java.net.Socket.<init>(Socket.java:425) > at java.net.Socket.<init>(Socket.java:208) > at > org.apache.spark.streaming.dstream.SocketReceiver.receive(SocketInputDStream.scala:71) > at > org.apache.spark.streaming.dstream.SocketReceiver$$anon$2.run(SocketInputDStream.scala:57) > > ------------------------------------------- > Time: 1415880224000 ms > ------------------------------------------- > > If anyone encountered the same problem and solved the issue, I would be very > thankful if you could describe how to solve the problem or what could cause > it. > > Best regards, > > Niko > --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@spark.apache.org For additional commands, e-mail: user-h...@spark.apache.org
