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From Harsh J <ha...@cloudera.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 14:44:38 GMT
Hi,

JRE version: 7.0_01-b08

This version (1.7 JDK/JRE) isn't supported by 1.x Hadoop. Please
switch your JAVA_HOME to a 1.6-based JRE.

What you're running into is a JVM SIGFPE, which am sure-enough is
cause of the bad java version used.

On Wed, May 16, 2012 at 7:50 PM, waqas latif <waqas254@gmail.com> wrote:
> ohh my mistake..sorry I misunderstood that to be private in mailing list. i
> made it public now. and yes I configured the right java home. Please have a
> look at pastebin links again.
>
> On Wed, May 16, 2012 at 4:16 PM, Harsh J <harsh@cloudera.com> wrote:
>
>> These paste links are marked private. Since am not their uploader, I
>> can't view them. Your response hints on a java issue? Have you
>> configured the right JAVA_HOME in hadoop-env.sh?
>>
>> On Wed, May 16, 2012 at 7:30 PM, waqas latif <waqas254@gmail.com> wrote:
>> > 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/127.0.0.1:8021failed
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
>> >>
>>
>>
>>
>> --
>> Harsh J
>>



-- 
Harsh J

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