Hi All,

I made 4-5 attempts in configuring the namenode but always get a Java Error

I am using hadoop-0.22.0 on cygwin. SSH is working

I have installed JDK 5 in JAVA_HOME=/cygdrive/c/Java/jdk1.5.0_22 and same
is set in hadoop-env.sh as well as the cygwin .bash_profile.
When i log in into Cygwin i see the JAVA_HOME set.

Below is the error -

-bash-4.1$ pwd
/cygdrive/c/hadoop/hadoop-0.22.0
-bash-4.1$ bin/hadoop namenode -format
*cygpath: can't convert empty path
**java.lang.NoClassDefFoundError: org/apache/hadoop/util/PlatformName
**Exception in thread "main" cygpath: can't convert empty path
cygpath: can't convert empty path
*DEPRECATED: Use of this script to execute hdfs command is deprecated.
Instead use the hdfs command for it.

cygpath: can't convert empty path
java.lang.NoClassDefFoundError: org/apache/hadoop/util/PlatformName
Exception in thread "main" cygpath: can't convert empty path
cygpath: can't convert empty path
java.lang.UnsupportedClassVersionError: Bad version number in .class file
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
        at
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
Exception in thread "main" -bash-4.1$
-bash-4.1$

-bash-4.1$ grep JAVA hadoop-env.sh
# The only required environment variable is JAVA_HOME.  All others are
# set JAVA_HOME in this file, so that it is correctly defined on
# export JAVA_HOME=/usr/lib/j2sdk1.6-sun
*export JAVA_HOME=/cygdrive/c/Java/jdk1.5.0_22
*
Any help is much appreciated.

Thanks,
Manish

Hi,

You should try with java 1.6.
See
http://hadoop.apache.org/common/docs/r0.22.0/single_node_setup.html#PreReqs

You don't want to use the hadoop release 1.0?

N.

On Sat, Feb 11, 2012 at 11:51 AM, Manish Maheshwari <[EMAIL PROTECTED]>wrote:

> Hi All,
>
> I made 4-5 attempts in configuring the namenode but always get a Java Error
>
> I am using hadoop-0.22.0 on cygwin. SSH is working
>
> I have installed JDK 5 in JAVA_HOME=/cygdrive/c/Java/jdk1.5.0_22 and same
> is set in hadoop-env.sh as well as the cygwin .bash_profile.
> When i log in into Cygwin i see the JAVA_HOME set.
>
> Below is the error -
>
> -bash-4.1$ pwd
> /cygdrive/c/hadoop/hadoop-0.22.0
> -bash-4.1$ bin/hadoop namenode -format
> *cygpath: can't convert empty path
> **java.lang.NoClassDefFoundError: org/apache/hadoop/util/PlatformName
> **Exception in thread "main" cygpath: can't convert empty path
> cygpath: can't convert empty path
> *DEPRECATED: Use of this script to execute hdfs command is deprecated.
> Instead use the hdfs command for it.
>
> cygpath: can't convert empty path
> java.lang.NoClassDefFoundError: org/apache/hadoop/util/PlatformName
> Exception in thread "main" cygpath: can't convert empty path
> cygpath: can't convert empty path
> java.lang.UnsupportedClassVersionError: Bad version number in .class file
>        at java.lang.ClassLoader.defineClass1(Native Method)
>        at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
>        at
> java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
>        at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
>        at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
>        at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
>        at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
>        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268)
>        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
>        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
> Exception in thread "main" -bash-4.1$
> -bash-4.1$
>
> -bash-4.1$ grep JAVA hadoop-env.sh
> # The only required environment variable is JAVA_HOME.  All others are
> # set JAVA_HOME in this file, so that it is correctly defined on
> # export JAVA_HOME=/usr/lib/j2sdk1.6-sun
> *export JAVA_HOME=/cygdrive/c/Java/jdk1.5.0_22
> *
> Any help is much appreciated.
>
> Thanks,
> Manish
>

Thanks,

I tried with hadoop-1.0.0 and JRE6 and things are looking good. I was able
to format the namenode and bring up the NameNode 'calvin-PC:47110' and
Hadoop Map/Reduce Administration webpages.

Further i tried the example of TestDFSIO but get the below error of
connection refused.

-bash-4.1$ cd share/hadoop
-bash-4.1$ ../../bin/hadoop jar hadoop-test-1.0.0.jar TestDFSIO –write
–nrFiles 1 –filesize 10
Warning: $HADOOP_HOME is deprecated.

TestDFSIO.0.0.4
12/02/12 15:05:08 INFO fs.TestDFSIO: nrFiles = 1
12/02/12 15:05:08 INFO fs.TestDFSIO: fileSize (MB) = 1
12/02/12 15:05:08 INFO fs.TestDFSIO: bufferSize = 1000000
12/02/12 15:05:08 INFO fs.TestDFSIO: creating control file: 1 mega bytes, 1
files
12/02/12 15:05:08 INFO fs.TestDFSIO: created control files for: 1 files
12/02/12 15:05:11 INFO ipc.Client: Retrying connect to server: calvin-PC/
127.0.0.1:8021. Already tried 0 time(s).
12/02/12 15:05:13 INFO ipc.Client: Retrying connect to server: calvin-PC/
127.0.0.1:8021. Already tried 1 time(s).
12/02/12 15:05:15 INFO ipc.Client: Retrying connect to server: calvin-PC/
127.0.0.1:8021. Already tried 2 time(s).
12/02/12 15:05:17 INFO ipc.Client: Retrying connect to server: calvin-PC/
127.0.0.1:8021. Already tried 3 time(s).
12/02/12 15:05:19 INFO ipc.Client: Retrying connect to server: calvin-PC/
127.0.0.1:8021. Already tried 4 time(s).
12/02/12 15:05:21 INFO ipc.Client: Retrying connect to server: calvin-PC/
127.0.0.1:8021. Already tried 5 time(s).
12/02/12 15:05:23 INFO ipc.Client: Retrying connect to server: calvin-PC/
127.0.0.1:8021. Already tried 6 time(s).
12/02/12 15:05:25 INFO ipc.Client: Retrying connect to server: calvin-PC/
127.0.0.1:8021. Already tried 7 time(s).
12/02/12 15:05:27 INFO ipc.Client: Retrying connect to server: calvin-PC/
127.0.0.1:8021. Already tried 8 time(s).
12/02/12 15:05:29 INFO ipc.Client: Retrying connect to server: calvin-PC/
127.0.0.1:8021. Already tried 9 time(s).
java.net.ConnectException: Call to calvin-PC/127.0.0.1:8021 failed on
connection exception: java.net.ConnectException: Connection refused: no
further information
        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.fs.TestDFSIO.runIOTest(TestDFSIO.java:257)
        at org.apache.hadoop.fs.TestDFSIO.readTest(TestDFSIO.java:295)
        at org.apache.hadoop.fs.TestDFSIO.run(TestDFSIO.java:459)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
        at org.apache.hadoop.fs.TestDFSIO.main(TestDFSIO.java:317)
        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$ProgramDescription.invoke(ProgramDriver.java:68)
        at
org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:139)
        at org.apache.hadoop.test.AllTestDriver.main(AllTestDriver.java:81)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.hadoop.util.RunJar.main(RunJar.java:156)
Caused by: java.net.ConnectException: Connection refused: no further
information
        at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
        at
sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567)
        at
org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
        at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:656)
        at
org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:434)
        at
org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:560)
        at
org.apache.hadoop.ipc.Client$Connection.access$2000(Client.java:184)
        at org.apache.hadoop.ipc.Client.getConnection(Client.java:1202)
        at org.apache.hadoop.ipc.Client.call(Client.java:1046)
        ... 26 more
-bash-4.1$

Is this a problem with ssh. ssh daemon is still working. i could not get
anything on this on google.

Thanks
Manish

On Sat, Feb 11, 2012 at 4:37 PM, N Keywal <[EMAIL PROTECTED]> wrote:
http://hadoop.apache.org/common/docs/r0.22.0/single_node_setup.html#PreReqs
Error
same
file

Manish

If you read the error message, it says "connection refused". Big clue :-)

You probably have firewall configured.

Raj

Sent from my iPad
Please excuse the typos.

On Feb 12, 2012, at 1:41 AM, Manish Maheshwari <[EMAIL PROTECTED]> wrote:

> Thanks,
>
> I tried with hadoop-1.0.0 and JRE6 and things are looking good. I was able
> to format the namenode and bring up the NameNode 'calvin-PC:47110' and
> Hadoop Map/Reduce Administration webpages.
>
> Further i tried the example of TestDFSIO but get the below error of
> connection refused.
>
> -bash-4.1$ cd share/hadoop
> -bash-4.1$ ../../bin/hadoop jar hadoop-test-1.0.0.jar TestDFSIO –write
> –nrFiles 1 –filesize 10
> Warning: $HADOOP_HOME is deprecated.
>
> TestDFSIO.0.0.4
> 12/02/12 15:05:08 INFO fs.TestDFSIO: nrFiles = 1
> 12/02/12 15:05:08 INFO fs.TestDFSIO: fileSize (MB) = 1
> 12/02/12 15:05:08 INFO fs.TestDFSIO: bufferSize = 1000000
> 12/02/12 15:05:08 INFO fs.TestDFSIO: creating control file: 1 mega bytes, 1
> files
> 12/02/12 15:05:08 INFO fs.TestDFSIO: created control files for: 1 files
> 12/02/12 15:05:11 INFO ipc.Client: Retrying connect to server: calvin-PC/
> 127.0.0.1:8021. Already tried 0 time(s).
> 12/02/12 15:05:13 INFO ipc.Client: Retrying connect to server: calvin-PC/
> 127.0.0.1:8021. Already tried 1 time(s).
> 12/02/12 15:05:15 INFO ipc.Client: Retrying connect to server: calvin-PC/
> 127.0.0.1:8021. Already tried 2 time(s).
> 12/02/12 15:05:17 INFO ipc.Client: Retrying connect to server: calvin-PC/
> 127.0.0.1:8021. Already tried 3 time(s).
> 12/02/12 15:05:19 INFO ipc.Client: Retrying connect to server: calvin-PC/
> 127.0.0.1:8021. Already tried 4 time(s).
> 12/02/12 15:05:21 INFO ipc.Client: Retrying connect to server: calvin-PC/
> 127.0.0.1:8021. Already tried 5 time(s).
> 12/02/12 15:05:23 INFO ipc.Client: Retrying connect to server: calvin-PC/
> 127.0.0.1:8021. Already tried 6 time(s).
> 12/02/12 15:05:25 INFO ipc.Client: Retrying connect to server: calvin-PC/
> 127.0.0.1:8021. Already tried 7 time(s).
> 12/02/12 15:05:27 INFO ipc.Client: Retrying connect to server: calvin-PC/
> 127.0.0.1:8021. Already tried 8 time(s).
> 12/02/12 15:05:29 INFO ipc.Client: Retrying connect to server: calvin-PC/
> 127.0.0.1:8021. Already tried 9 time(s).
> java.net.ConnectException: Call to calvin-PC/127.0.0.1:8021 failed on
> connection exception: java.net.ConnectException: Connection refused: no
> further information
>        at org.apache.hadoop.ipc.Client.wrapException(Client.java:1095)
>        at org.apache.hadoop.ipc.Client.call(Client.java:1071)
>        at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:225)
>        at org.apache.hadoop.mapred.$Proxy2.getProtocolVersion(Unknown
> Source)
>        at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:396)
>        at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:379)
>        at
> org.apache.hadoop.mapred.JobClient.createRPCProxy(JobClient.java:480)
>        at org.apache.hadoop.mapred.JobClient.init(JobClient.java:474)
>        at org.apache.hadoop.mapred.JobClient.<init>(JobClient.java:457)
>        at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:1260)
>        at org.apache.hadoop.fs.TestDFSIO.runIOTest(TestDFSIO.java:257)
>        at org.apache.hadoop.fs.TestDFSIO.readTest(TestDFSIO.java:295)
>        at org.apache.hadoop.fs.TestDFSIO.run(TestDFSIO.java:459)
>        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
>        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
>        at org.apache.hadoop.fs.TestDFSIO.main(TestDFSIO.java:317)
>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>        at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>        at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>        at java.lang.reflect.Method.invoke(Method.java:597)
>        at
> org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:68)
>        at