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From waqas latif <waqas...@gmail.com>
Subject Re: 8021 failed on connection exception: java.net.ConnectException: Connection refused at org.apache.hadoop.ipc.Client.wrapException(Client.java:1095)
Date Wed, 16 May 2012 14:00:48 GMT
Harsh, I have 2 files for jobtracker with extension log and out. Here are
both files. There is an error message in out file. Please check both of
them and see if you can guide me in this.
here are the pastebin links for both files. I also want to mention that
with same jave setup I can run hadoop 0.20 successfully but cant configure
hadoop 1.0

jobtracker log file
http://pastebin.com/61dqSiYJ

jobtracker out file
http://pastebin.com/Mf7yrB8p

waqas

On Wed, May 16, 2012 at 3:47 PM, Harsh J <harsh@cloudera.com> wrote:

> Can you paste logs that say "jobtracker" from $HADOOP_HOME/logs/ into
> pastebin.com and pass back the pasted link? Looks like your MR
> services aren't starting for some reason and logs will tell you why.
>
> On Wed, May 16, 2012 at 7:08 PM, waqas latif <waqas254@gmail.com> wrote:
> > Hi Harsh,
> > I run this. but still there is no jobtracker and tasktracker in the jps
> > output. I only have datanode, namenode and secondarynamenode in jps
> output.
> >
> > waqas
> >
> > On Wed, May 16, 2012 at 3:28 PM, Harsh J <harsh@cloudera.com> wrote:
> >
> >> You have configured a MR cluster, but it isn't up.
> >>
> >> Run:
> >>
> >> bin/start-mapred.sh
> >>
> >> Then check for "JobTracker" and "TaskTracker" in 'jps' output.
> >>
> >> Then re-run your example pi job, and it should go through.
> >>
> >> On Wed, May 16, 2012 at 6:51 PM, waqas latif <waqas254@gmail.com>
> wrote:
> >> > Hi I am trying to configure Hadoop 1.0. in pseudodistributed mode.
> >> >
> >> > But when I run the pi example given in the hadoop distribution, I get
> the
> >> > error mentioned in title. Can someone please help me and guide me how
> >> can I
> >> > fix this problem. Also its a request that please suggest solution as
> well
> >> > if possible along with pinpointing the problem.
> >> >
> >> > here is what i get by running jps
> >> >
> >> > 8322 Jps
> >> > 7611 SecondaryNameNode
> >> > 7474 DataNode
> >> > 7341 NameNode
> >> >
> >> > Here is complete error message.
> >> >
> >> > Number of Maps  = 10
> >> > Samples per Map = 100
> >> > Wrote input for Map #0
> >> > Wrote input for Map #1
> >> > Wrote input for Map #2
> >> > Wrote input for Map #3
> >> > Wrote input for Map #4
> >> > Wrote input for Map #5
> >> > Wrote input for Map #6
> >> > Wrote input for Map #7
> >> > Wrote input for Map #8
> >> > Wrote input for Map #9
> >> > Starting Job
> >> > 12/05/16 13:11:56 INFO ipc.Client: Retrying connect to server:
> localhost/
> >> > 127.0.0.1:8021. Already tried 0 time(s).
> >> > 12/05/16 13:11:57 INFO ipc.Client: Retrying connect to server:
> localhost/
> >> > 127.0.0.1:8021. Already tried 1 time(s).
> >> > 12/05/16 13:11:58 INFO ipc.Client: Retrying connect to server:
> localhost/
> >> > 127.0.0.1:8021. Already tried 2 time(s).
> >> > 12/05/16 13:11:59 INFO ipc.Client: Retrying connect to server:
> localhost/
> >> > 127.0.0.1:8021. Already tried 3 time(s).
> >> > 12/05/16 13:12:00 INFO ipc.Client: Retrying connect to server:
> localhost/
> >> > 127.0.0.1:8021. Already tried 4 time(s).
> >> > 12/05/16 13:12:01 INFO ipc.Client: Retrying connect to server:
> localhost/
> >> > 127.0.0.1:8021. Already tried 5 time(s).
> >> > 12/05/16 13:12:02 INFO ipc.Client: Retrying connect to server:
> localhost/
> >> > 127.0.0.1:8021. Already tried 6 time(s).
> >> > 12/05/16 13:12:03 INFO ipc.Client: Retrying connect to server:
> localhost/
> >> > 127.0.0.1:8021. Already tried 7 time(s).
> >> > 12/05/16 13:12:04 INFO ipc.Client: Retrying connect to server:
> localhost/
> >> > 127.0.0.1:8021. Already tried 8 time(s).
> >> > 12/05/16 13:12:05 INFO ipc.Client: Retrying connect to server:
> localhost/
> >> > 127.0.0.1:8021. Already tried 9 time(s).
> >> > java.net.ConnectException: Call to localhost/127.0.0.1:8021 failed on
> >> > connection exception: java.net.ConnectException: Connection refused
> >> >        at org.apache.hadoop.ipc.Client.wrapException(Client.java:1095)
> >> >        at org.apache.hadoop.ipc.Client.call(Client.java:1071)
> >> >        at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:225)
> >> >        at org.apache.hadoop.mapred.$Proxy2.getProtocolVersion(Unknown
> >> > Source)
> >> >        at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:396)
> >> >        at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:379)
> >> >        at
> >> > org.apache.hadoop.mapred.JobClient.createRPCProxy(JobClient.java:480)
> >> >        at org.apache.hadoop.mapred.JobClient.init(JobClient.java:474)
> >> >        at
> org.apache.hadoop.mapred.JobClient.<init>(JobClient.java:457)
> >> >        at
> org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:1260)
> >> >        at
> >> > org.apache.hadoop.examples.PiEstimator.estimate(PiEstimator.java:297)
> >> >        at
> >> org.apache.hadoop.examples.PiEstimator.run(PiEstimator.java:342)
> >> >        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
> >> >        at
> >> org.apache.hadoop.examples.PiEstimator.main(PiEstimator.java:351)
> >> >        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> >> >        at
> >> >
> >>
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> >> >        at
> >> >
> >>
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> >> >        at java.lang.reflect.Method.invoke(Method.java:601)
> >> >        at
> >> >
> >>
> org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:68)
> >> >        at
> >> > org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:139)
> >> >        at
> >> > org.apache.hadoop.examples.ExampleDriver.main(ExampleDriver.java:64)
> >> >        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> >> >        at
> >> >
> >>
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> >> >        at
> >> >
> >>
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> >> >        at java.lang.reflect.Method.invoke(Method.java:601)
> >> >        at org.apache.hadoop.util.RunJar.main(RunJar.java:156)
> >> > Caused by: java.net.ConnectException: Connection refused
> >> >        at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> >> >        at
> >> > sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:701)
> >> >        at
> >> >
> >>
> org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
> >> >        at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:656)
> >> >        at
> >> >
> org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:434)
> >> >        at
> >> >
> org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:560)
> >> >        at
> >> > org.apache.hadoop.ipc.Client$Connection.access$2000(Client.java:184)
> >> >        at org.apache.hadoop.ipc.Client.getConnection(Client.java:1202)
> >> >        at org.apache.hadoop.ipc.Client.call(Client.java:1046)
> >> >        ... 24 more
> >>
> >>
> >>
> >> --
> >> Harsh J
> >>
>
>
>
> --
> Harsh J
>

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