Then let's move the discussion on the hadoop user mailing list ;) >From what I can see on you feedbacks, it seems that hadoop is simply not running. Are you able to see any process? Do anything?
JM > > ---------- Forwarded message ---------- > From: Balakrishna Dhanekula <[email protected]> > Date: 2013/5/16 > Subject: Re: Getting this exception "java.net.ConnectException: Call From > ubuntu/127.0.0.1 to ubuntu:8020 failed on connection exception: > java.net.ConnectException: Connection refused; For more details see: > http://wiki.apache.org/hadoop/ConnectionRefused"; > > > > Hi JM, > > Actually I am using Apache Hadoop 1.1.1 not the cloudera installer. > > When I run the file system check I get the same error. > > Thanks, > Bala. > > > On Thu, May 16, 2013 at 7:47 AM, Jean-Marc Spaggiari <[email protected]>wrote: > >> Hi Bala, >> >> Before trying the pi example, have you verified that you hadoop server is >> working fine? What do you have in the logs? What on the Hadoop interface? >> Is Cloudera Manager telling you that hadoop is up and running? >> >> Are simple commands like hadoop fs -ls working fine? >> >> JM >> >> >> 2013/5/15 Balakrishna Dhanekula <[email protected]> >> >>> Hi Jean-Marc Spaggiari, >>> >>> Thanks for taking interest and replying. >>> >>> I have changed the the hosts entries as >>> >>> root@ubuntu:/etc# cat hosts >>> 127.0.0.1 localhost >>> 192.168.1.102 ubuntu >>> >>> Moreover I have a dynamic ip provided by my Internet provider. Every >>> time I connect to Internet I get a new ip address. >>> >>> I am still having the same problem here's the error: >>> >>> ****************************************************************************************************************************************** >>> >>> hduser@ubuntu:~/hadoop111/bin$ hadoop jar ../hadoop-examples-1.1.1.jar >>> pi 3 10 >>> Number of Maps = 3 >>> Samples per Map = 10 >>> java.net.ConnectException: Call From ubuntu/192.168.1.102 to >>> ubuntu:8020 failed on connection exception: java.net.ConnectException: >>> Connection refused; For more details see: >>> http://wiki.apache.org/hadoop/ConnectionRefused >>> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native >>> Method) >>> >>> ****************************************************************************************************************** >>> >>> >>> >>> Thanks, >>> Bala. >>> >>> >>> On Wednesday, May 15, 2013 11:21:57 PM UTC+5:30, Jean-Marc Spaggiari >>> wrote: >>> >>>> Hi Balakrishna, >>>> >>>> In your host file, please replace the 2nd 127.0.0.1 by your local IP >>>> and retry. >>>> >>>> Like: >>>> 127.0.0.1 localhost >>>> 192.168.1.2 ubuntu >>>> >>>> You can also add the FQDN: >>>> 127.0.0.1 localhost >>>> 192.168.1.2 ubuntu ubuntu.my.domain.name >>>> >>>> JM >>>> >>>> >>>> 2013/5/15 Balakrishna Dhanekula <balakrishna....@**gmail.com> >>>> >>>> Hi, >>>>> >>>>> When trying to run the job I am getting this exception. I am using >>>>> Apache Hadoop 1.1.1 version. I could see all the services started >>>>> successfully. >>>>> >>>>> Can some one please help me. >>>>> >>>>> My entries in the /etc/hosts file are: >>>>> >>>>> ************************************************ >>>>> 127.0.0.1 localhost >>>>> 127.0.0.1 ubuntu >>>>> >>>>> # The following lines are desirable for IPv6 capable hosts >>>>> ::1 ip6-localhost ip6-loopback >>>>> fe00::0 ip6-localnet >>>>> ff00::0 ip6-mcastprefix >>>>> ff02::1 ip6-allnodes >>>>> ff02::2 ip6-allrouters >>>>> ff02::3 ip6-allhosts >>>>> **************************************************************** >>>>> ******************** >>>>> >>>>> hduser@ubuntu:~/hadoop111/bin$ hadoop jar >>>>> ../hadoop-examples-1.1.1.jar pi 3 10 >>>>> Number of Maps = 3 >>>>> Samples per Map = 10 >>>>> java.net.ConnectException: Call From ubuntu/127.0.0.1 to ubuntu:8020 >>>>> failed on connection exception: java.net.ConnectException: Connection >>>>> refused; For more details see: http://wiki.apache.org/hadoop/** >>>>> ConnectionRefused <http://wiki.apache.org/hadoop/ConnectionRefused> >>>>> at sun.reflect.**NativeConstructorAccessorImpl.**newInstance0(Native >>>>> Method) >>>>> at sun.reflect.**NativeConstructorAccessorImpl.**newInstance(** >>>>> NativeConstructorAccessorImpl.**java:39) >>>>> at sun.reflect.**DelegatingConstructorAccessorI**mpl.newInstance(* >>>>> *DelegatingConstructorAccessorI**mpl.java:27) >>>>> at java.lang.reflect.Constructor.**newInstance(Constructor.java:** >>>>> 513) >>>>> at org.apache.hadoop.net.**NetUtils.wrapWithMessage(** >>>>> NetUtils.java:779) >>>>> at org.apache.hadoop.net.**NetUtils.wrapException(** >>>>> NetUtils.java:726) >>>>> at org.apache.hadoop.ipc.Client.**call(Client.java:1229) >>>>> at org.apache.hadoop.ipc.**ProtobufRpcEngine$Invoker.** >>>>> invoke(ProtobufRpcEngine.java:**202) >>>>> at $Proxy9.getFileInfo(Unknown Source) >>>>> at sun.reflect.**NativeMethodAccessorImpl.**invoke0(Native Method) >>>>> at sun.reflect.**NativeMethodAccessorImpl.**invoke(** >>>>> NativeMethodAccessorImpl.java:**39) >>>>> at sun.reflect.**DelegatingMethodAccessorImpl.**invoke(** >>>>> DelegatingMethodAccessorImpl.**java:25) >>>>> at java.lang.reflect.Method.**invoke(Method.java:597) >>>>> at org.apache.hadoop.io.retry.**RetryInvocationHandler.** >>>>> invokeMethod(**RetryInvocationHandler.java:**164) >>>>> at org.apache.hadoop.io.retry.**RetryInvocationHandler.invoke(** >>>>> RetryInvocationHandler.java:**83) >>>>> at $Proxy9.getFileInfo(Unknown Source) >>>>> at org.apache.hadoop.hdfs.**protocolPB.** >>>>> ClientNamenodeProtocolTranslat**orPB.getFileInfo(** >>>>> ClientNamenodeProtocolTranslat**orPB.java:628) >>>>> at org.apache.hadoop.hdfs.**DFSClient.getFileInfo(** >>>>> DFSClient.java:1545) >>>>> at org.apache.hadoop.hdfs.**DistributedFileSystem.**getFileStatus( >>>>> **DistributedFileSystem.java:**805) >>>>> at org.apache.hadoop.fs.**FileSystem.exists(FileSystem.** >>>>> java:1367) >>>>> at org.apache.hadoop.examples.**PiEstimator.estimate(** >>>>> PiEstimator.java:269) >>>>> at org.apache.hadoop.examples.**PiEstimator.run(PiEstimator.** >>>>> java:342) >>>>> at org.apache.hadoop.util.**ToolRunner.run(ToolRunner.**java:70) >>>>> at org.apache.hadoop.examples.**PiEstimator.main(PiEstimator.** >>>>> java:351) >>>>> at sun.reflect.**NativeMethodAccessorImpl.**invoke0(Native Method) >>>>> at sun.reflect.**NativeMethodAccessorImpl.**invoke(** >>>>> NativeMethodAccessorImpl.java:**39) >>>>> at sun.reflect.**DelegatingMethodAccessorImpl.**invoke(** >>>>> DelegatingMethodAccessorImpl.**java:25) >>>>> at java.lang.reflect.Method.**invoke(Method.java:597) >>>>> at org.apache.hadoop.util.**ProgramDriver$** >>>>> ProgramDescription.invoke(**ProgramDriver.java:72) >>>>> at org.apache.hadoop.util.**ProgramDriver.driver(** >>>>> ProgramDriver.java:144) >>>>> at org.apache.hadoop.examples.**ExampleDriver.main(** >>>>> ExampleDriver.java:64) >>>>> at sun.reflect.**NativeMethodAccessorImpl.**invoke0(Native Method) >>>>> at sun.reflect.**NativeMethodAccessorImpl.**invoke(** >>>>> NativeMethodAccessorImpl.java:**39) >>>>> at sun.reflect.**DelegatingMethodAccessorImpl.**invoke(** >>>>> DelegatingMethodAccessorImpl.**java:25) >>>>> at java.lang.reflect.Method.**invoke(Method.java:597) >>>>> at org.apache.hadoop.util.RunJar.**main(RunJar.java:208) >>>>> Caused by: java.net.ConnectException: Connection refused >>>>> at sun.nio.ch.SocketChannelImpl.**checkConnect(Native Method) >>>>> at sun.nio.ch.SocketChannelImpl.**finishConnect(** >>>>> SocketChannelImpl.java:567) >>>>> at org.apache.hadoop.net.**SocketIOWithTimeout.connect(** >>>>> SocketIOWithTimeout.java:207) >>>>> at org.apache.hadoop.net.**NetUtils.connect(NetUtils.**java:525) >>>>> at org.apache.hadoop.net.**NetUtils.connect(NetUtils.**java:489) >>>>> at org.apache.hadoop.ipc.Client$**Connection.setupConnection(** >>>>> Client.java:499) >>>>> at org.apache.hadoop.ipc.Client$**Connection.setupIOstreams(** >>>>> Client.java:593) >>>>> at org.apache.hadoop.ipc.Client$**Connection.access$2000(Client.** >>>>> java:241) >>>>> at org.apache.hadoop.ipc.Client.**getConnection(Client.java:** >>>>> 1278) >>>>> at org.apache.hadoop.ipc.Client.**call(Client.java:1196) >>>>> ... 29 more >>>>> hduser@ubuntu:~/hadoop111/bin$ >>>>> >>>>> >>>> >> > >
