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Posted to common-user@hadoop.apache.org by 朱韬 <ry...@163.com> on 2011/02/28 04:00:11 UTC
Problem with building hadoop 0.21
Hi，guys:
I checked out the source code fromhttp://svn.apache.org/repos/asf/hadoop/mapreduce/trunk/. Then I compiled using this script:
#!/bin/bash
export JAVA_HOME=/usr/share/jdk1.6.0_14
export CFLAGS=-m64
export CXXFLAGS=-m64
export ANT_HOME=/opt/apache-ant-1.8.2
export PATH=$PATH:$ANT_HOME/bin
ant -Dversion=0.21.0 -Dcompile.native=true -Dforrest.home=/home/hadoop/apache-forrest-0.9 clean tar
It was Ok before these steps. Then I replaced "hadoop-mapred-0.21.0.jar", hadoop-mapred-0.21.0-sources.jar, hadoop-mapred-examples-0.21.0.jar,hadoop-mapred-test-0.21.0.jar,and hadoop-mapred-tools-0.21.0.jar inRelease 0.21.0 with the compiled jar files from the above step. Also I added my scheduler to lib. When starting the customed hadoop, I encountered the problems as blow:
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/hadoop/security/RefreshUserMappingsProtocol
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$000(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
10.61.0.6: starting tasktracker, logging to /home/hadoop/hadoop-green-0.1.0/logs/hadoop-hadoop-tasktracker-hdt0.hypercloud.ict.out
10.61.0.143: starting tasktracker, logging to /home/hadoop/hadoop-green-0.1.0/logs/hadoop-hadoop-tasktracker-hdt1.hypercloud.ict.out
10.61.0.7: starting tasktracker, logging to /home/hadoop/hadoop-green-0.1.0/logs/hadoop-hadoop-tasktracker-hdt2.hypercloud.ict.out
10.61.0.6: Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/hadoop/io/SecureIOUtils$AlreadyExistsException
10.61.0.6: Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.io.SecureIOUtils$AlreadyExistsException
10.61.0.6: at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
10.61.0.6: at java.security.AccessController.doPrivileged(Native Method)
10.61.0.6: at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
10.61.0.6: at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
10.61.0.6: at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
10.61.0.6: at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
10.61.0.6: at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
10.61.0.6: Could not find the main class: org.apache.hadoop.mapred.TaskTracker. Program will exit.
10.61.0.143: Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/hadoop/io/SecureIOUtils$AlreadyExistsException
10.61.0.143: Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.io.SecureIOUtils$AlreadyExistsException
10.61.0.143: at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
10.61.0.143: at java.security.AccessController.doPrivileged(Native Method)
10.61.0.143: at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
10.61.0.143: at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
10.61.0.143: at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
10.61.0.143: at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
10.61.0.143: at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
10.61.0.143: Could not find the main class: org.apache.hadoop.mapred.TaskTracker. Program will exit.
10.61.0.7: Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/hadoop/io/SecureIOUtils$AlreadyExistsException
10.61.0.7: Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.io.SecureIOUtils$AlreadyExistsException
10.61.0.7: at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
10.61.0.7: at java.security.AccessController.doPrivileged(Native Method)
10.61.0.7: at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
10.61.0.7: at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
10.61.0.7: at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
10.61.0.7: at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
10.61.0.7: at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
10.61.0.7: Could not find the main class: org.apache.hadoop.mapred.TaskTracker. Program will exit.
zhutao
Re: Re: Problem with building hadoop 0.21
Posted by Simon <gs...@gmail.com>.
I mean can you just make changes to the 0.21 version of your hadoop rather
than put the 0.21 version jars to the latest code. There might be API
breakdowns. Or you can try downloading source code of version 0.21 and try
your steps.
Thanks
Simon
2011/2/28 朱韬 <ry...@163.com>
> Hi.Simon:
> I modified some coed related to scheduler and designed a customized
> scheduler .when I built the modified code, then the problems described above
> came up with it. I doubt whether there was something with my code, but after
> I built the out-of-box code, the same problems still existed. Can you tell
> me how to build and deploy a customized hadoop?
> Thank you!
>
> zhutao
>
>
>
>
>
> At 2011-02-28 11:21:16，Simon <gs...@gmail.com> wrote:
>
> >Hey,
> >
> >Can you let us know why you want to replace all the jar files? That
> usually
> >does not work, especially for development code in the code base.
> >So, just use the one you have successfully compiled, don't replace jar
> >files.
> >
> >Hope it can work.
> >
> >Simon
> >
> >2011/2/27 朱韬 <ry...@163.com>
> >
> >> Hi，guys:
> >> I checked out the source code fromhttp://
> >> svn.apache.org/repos/asf/hadoop/mapreduce/trunk/. Then I compiled using
> >> this script:
> >> #!/bin/bash
> >> export JAVA_HOME=/usr/share/jdk1.6.0_14
> >> export CFLAGS=-m64
> >> export CXXFLAGS=-m64
> >> export ANT_HOME=/opt/apache-ant-1.8.2
> >> export PATH=$PATH:$ANT_HOME/bin
> >> ant -Dversion=0.21.0 -Dcompile.native=true
> >> -Dforrest.home=/home/hadoop/apache-forrest-0.9 clean tar
> >> It was Ok before these steps. Then I replaced
> >> "hadoop-mapred-0.21.0.jar", hadoop-mapred-0.21.0-sources.jar,
> >> hadoop-mapred-examples-0.21.0.jar,hadoop-mapred-test-0.21.0.jar,and
> >> hadoop-mapred-tools-0.21.0.jar inRelease 0.21.0 with the compiled jar
> files
> >> from the above step. Also I added my scheduler to lib. When starting the
> >> customed hadoop, I encountered the problems as blow:
> >> Exception in thread "main" java.lang.NoClassDefFoundError:
> >> org/apache/hadoop/security/RefreshUserMappingsProtocol
> >> 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$000(URLClassLoader.java:56)
> >> at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
> >> at java.security.AccessController.doPrivileged(Native Method)
> >> at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
> >> at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
> >> 10.61.0.6: starting tasktracker, logging to
> >>
> /home/hadoop/hadoop-green-0.1.0/logs/hadoop-hadoop-tasktracker-hdt0.hypercloud.ict.out
> >> 10.61.0.143: starting tasktracker, logging to
> >>
> /home/hadoop/hadoop-green-0.1.0/logs/hadoop-hadoop-tasktracker-hdt1.hypercloud.ict.out
> >> 10.61.0.7: starting tasktracker, logging to
> >>
> /home/hadoop/hadoop-green-0.1.0/logs/hadoop-hadoop-tasktracker-hdt2.hypercloud.ict.out
> >> 10.61.0.6: Exception in thread "main" java.lang.NoClassDefFoundError:
> >> org/apache/hadoop/io/SecureIOUtils$AlreadyExistsException
> >> 10.61.0.6: Caused by: java.lang.ClassNotFoundException:
> >> org.apache.hadoop.io.SecureIOUtils$AlreadyExistsException
> >> 10.61.0.6: at
> java.net.URLClassLoader$1.run(URLClassLoader.java:200)
> >> 10.61.0.6: at java.security.AccessController.doPrivileged(Native
> >> Method)
> >> 10.61.0.6: at
> >> java.net.URLClassLoader.findClass(URLClassLoader.java:188)
> >> 10.61.0.6: at
> java.lang.ClassLoader.loadClass(ClassLoader.java:307)
> >> 10.61.0.6: at
> >> sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> >> 10.61.0.6: at
> java.lang.ClassLoader.loadClass(ClassLoader.java:252)
> >> 10.61.0.6: at
> >> java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
> >> 10.61.0.6: Could not find the main class:
> >> org.apache.hadoop.mapred.TaskTracker. Program will exit.
> >> 10.61.0.143: Exception in thread "main" java.lang.NoClassDefFoundError:
> >> org/apache/hadoop/io/SecureIOUtils$AlreadyExistsException
> >> 10.61.0.143: Caused by: java.lang.ClassNotFoundException:
> >> org.apache.hadoop.io.SecureIOUtils$AlreadyExistsException
> >> 10.61.0.143: at
> java.net.URLClassLoader$1.run(URLClassLoader.java:200)
> >> 10.61.0.143: at java.security.AccessController.doPrivileged(Native
> >> Method)
> >> 10.61.0.143: at
> >> java.net.URLClassLoader.findClass(URLClassLoader.java:188)
> >> 10.61.0.143: at
> java.lang.ClassLoader.loadClass(ClassLoader.java:307)
> >> 10.61.0.143: at
> >> sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> >> 10.61.0.143: at
> java.lang.ClassLoader.loadClass(ClassLoader.java:252)
> >> 10.61.0.143: at
> >> java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
> >> 10.61.0.143: Could not find the main class:
> >> org.apache.hadoop.mapred.TaskTracker. Program will exit.
> >> 10.61.0.7: Exception in thread "main" java.lang.NoClassDefFoundError:
> >> org/apache/hadoop/io/SecureIOUtils$AlreadyExistsException
> >> 10.61.0.7: Caused by: java.lang.ClassNotFoundException:
> >> org.apache.hadoop.io.SecureIOUtils$AlreadyExistsException
> >> 10.61.0.7: at
> java.net.URLClassLoader$1.run(URLClassLoader.java:200)
> >> 10.61.0.7: at java.security.AccessController.doPrivileged(Native
> >> Method)
> >> 10.61.0.7: at
> >> java.net.URLClassLoader.findClass(URLClassLoader.java:188)
> >> 10.61.0.7: at
> java.lang.ClassLoader.loadClass(ClassLoader.java:307)
> >> 10.61.0.7: at
> >> sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> >> 10.61.0.7: at
> java.lang.ClassLoader.loadClass(ClassLoader.java:252)
> >> 10.61.0.7: at
> >> java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
> >> 10.61.0.7: Could not find the main class:
> >> org.apache.hadoop.mapred.TaskTracker. Program will exit.
> >>
> >> zhutao
> >>
> >>
> >
> >
> >--
> >Regards,
> >Simon
>
--
Regards,
Simon
Re:Re: Problem with building hadoop 0.21
Posted by 朱韬 <ry...@163.com>.
Hi.Simon:
I modified some coed related to scheduler and designed a customized scheduler .when I built the modified code, then the problems described above came up with it. I doubt whether there was something with my code, but after I built the out-of-box code, the same problems still existed. Can you tell me how to build and deploy a customized hadoop?
Thank you!
zhutao
At 2011-02-28 11:21:16，Simon <gs...@gmail.com> wrote:
>Hey,
>
>Can you let us know why you want to replace all the jar files? That usually
>does not work, especially for development code in the code base.
>So, just use the one you have successfully compiled, don't replace jar
>files.
>
>Hope it can work.
>
>Simon
>
>2011/2/27 朱韬 <ry...@163.com>
>
>> Hi，guys:
>> I checked out the source code fromhttp://
>> svn.apache.org/repos/asf/hadoop/mapreduce/trunk/. Then I compiled using
>> this script:
>> #!/bin/bash
>> export JAVA_HOME=/usr/share/jdk1.6.0_14
>> export CFLAGS=-m64
>> export CXXFLAGS=-m64
>> export ANT_HOME=/opt/apache-ant-1.8.2
>> export PATH=$PATH:$ANT_HOME/bin
>> ant -Dversion=0.21.0 -Dcompile.native=true
>> -Dforrest.home=/home/hadoop/apache-forrest-0.9 clean tar
>> It was Ok before these steps. Then I replaced
>> "hadoop-mapred-0.21.0.jar", hadoop-mapred-0.21.0-sources.jar,
>> hadoop-mapred-examples-0.21.0.jar,hadoop-mapred-test-0.21.0.jar,and
>> hadoop-mapred-tools-0.21.0.jar inRelease 0.21.0 with the compiled jar files
>> from the above step. Also I added my scheduler to lib. When starting the
>> customed hadoop, I encountered the problems as blow:
>> Exception in thread "main" java.lang.NoClassDefFoundError:
>> org/apache/hadoop/security/RefreshUserMappingsProtocol
>> 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$000(URLClassLoader.java:56)
>> at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
>> at java.security.AccessController.doPrivileged(Native Method)
>> at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
>> at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
>> 10.61.0.6: starting tasktracker, logging to
>> /home/hadoop/hadoop-green-0.1.0/logs/hadoop-hadoop-tasktracker-hdt0.hypercloud.ict.out
>> 10.61.0.143: starting tasktracker, logging to
>> /home/hadoop/hadoop-green-0.1.0/logs/hadoop-hadoop-tasktracker-hdt1.hypercloud.ict.out
>> 10.61.0.7: starting tasktracker, logging to
>> /home/hadoop/hadoop-green-0.1.0/logs/hadoop-hadoop-tasktracker-hdt2.hypercloud.ict.out
>> 10.61.0.6: Exception in thread "main" java.lang.NoClassDefFoundError:
>> org/apache/hadoop/io/SecureIOUtils$AlreadyExistsException
>> 10.61.0.6: Caused by: java.lang.ClassNotFoundException:
>> org.apache.hadoop.io.SecureIOUtils$AlreadyExistsException
>> 10.61.0.6: at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
>> 10.61.0.6: at java.security.AccessController.doPrivileged(Native
>> Method)
>> 10.61.0.6: at
>> java.net.URLClassLoader.findClass(URLClassLoader.java:188)
>> 10.61.0.6: at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
>> 10.61.0.6: at
>> sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
>> 10.61.0.6: at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
>> 10.61.0.6: at
>> java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
>> 10.61.0.6: Could not find the main class:
>> org.apache.hadoop.mapred.TaskTracker. Program will exit.
>> 10.61.0.143: Exception in thread "main" java.lang.NoClassDefFoundError:
>> org/apache/hadoop/io/SecureIOUtils$AlreadyExistsException
>> 10.61.0.143: Caused by: java.lang.ClassNotFoundException:
>> org.apache.hadoop.io.SecureIOUtils$AlreadyExistsException
>> 10.61.0.143: at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
>> 10.61.0.143: at java.security.AccessController.doPrivileged(Native
>> Method)
>> 10.61.0.143: at
>> java.net.URLClassLoader.findClass(URLClassLoader.java:188)
>> 10.61.0.143: at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
>> 10.61.0.143: at
>> sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
>> 10.61.0.143: at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
>> 10.61.0.143: at
>> java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
>> 10.61.0.143: Could not find the main class:
>> org.apache.hadoop.mapred.TaskTracker. Program will exit.
>> 10.61.0.7: Exception in thread "main" java.lang.NoClassDefFoundError:
>> org/apache/hadoop/io/SecureIOUtils$AlreadyExistsException
>> 10.61.0.7: Caused by: java.lang.ClassNotFoundException:
>> org.apache.hadoop.io.SecureIOUtils$AlreadyExistsException
>> 10.61.0.7: at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
>> 10.61.0.7: at java.security.AccessController.doPrivileged(Native
>> Method)
>> 10.61.0.7: at
>> java.net.URLClassLoader.findClass(URLClassLoader.java:188)
>> 10.61.0.7: at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
>> 10.61.0.7: at
>> sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
>> 10.61.0.7: at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
>> 10.61.0.7: at
>> java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
>> 10.61.0.7: Could not find the main class:
>> org.apache.hadoop.mapred.TaskTracker. Program will exit.
>>
>> zhutao
>>
>>
>
>
>--
>Regards,
>Simon
Re: Problem with building hadoop 0.21
Posted by Simon <gs...@gmail.com>.
Hey,
Can you let us know why you want to replace all the jar files? That usually
does not work, especially for development code in the code base.
So, just use the one you have successfully compiled, don't replace jar
files.
Hope it can work.
Simon
2011/2/27 朱韬 <ry...@163.com>
> Hi，guys:
> I checked out the source code fromhttp://
> svn.apache.org/repos/asf/hadoop/mapreduce/trunk/. Then I compiled using
> this script:
> #!/bin/bash
> export JAVA_HOME=/usr/share/jdk1.6.0_14
> export CFLAGS=-m64
> export CXXFLAGS=-m64
> export ANT_HOME=/opt/apache-ant-1.8.2
> export PATH=$PATH:$ANT_HOME/bin
> ant -Dversion=0.21.0 -Dcompile.native=true
> -Dforrest.home=/home/hadoop/apache-forrest-0.9 clean tar
> It was Ok before these steps. Then I replaced
> "hadoop-mapred-0.21.0.jar", hadoop-mapred-0.21.0-sources.jar,
> hadoop-mapred-examples-0.21.0.jar,hadoop-mapred-test-0.21.0.jar,and
> hadoop-mapred-tools-0.21.0.jar inRelease 0.21.0 with the compiled jar files
> from the above step. Also I added my scheduler to lib. When starting the
> customed hadoop, I encountered the problems as blow:
> Exception in thread "main" java.lang.NoClassDefFoundError:
> org/apache/hadoop/security/RefreshUserMappingsProtocol
> 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$000(URLClassLoader.java:56)
> at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
> 10.61.0.6: starting tasktracker, logging to
> /home/hadoop/hadoop-green-0.1.0/logs/hadoop-hadoop-tasktracker-hdt0.hypercloud.ict.out
> 10.61.0.143: starting tasktracker, logging to
> /home/hadoop/hadoop-green-0.1.0/logs/hadoop-hadoop-tasktracker-hdt1.hypercloud.ict.out
> 10.61.0.7: starting tasktracker, logging to
> /home/hadoop/hadoop-green-0.1.0/logs/hadoop-hadoop-tasktracker-hdt2.hypercloud.ict.out
> 10.61.0.6: Exception in thread "main" java.lang.NoClassDefFoundError:
> org/apache/hadoop/io/SecureIOUtils$AlreadyExistsException
> 10.61.0.6: Caused by: java.lang.ClassNotFoundException:
> org.apache.hadoop.io.SecureIOUtils$AlreadyExistsException
> 10.61.0.6: at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
> 10.61.0.6: at java.security.AccessController.doPrivileged(Native
> Method)
> 10.61.0.6: at
> java.net.URLClassLoader.findClass(URLClassLoader.java:188)
> 10.61.0.6: at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
> 10.61.0.6: at
> sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> 10.61.0.6: at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
> 10.61.0.6: at
> java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
> 10.61.0.6: Could not find the main class:
> org.apache.hadoop.mapred.TaskTracker. Program will exit.
> 10.61.0.143: Exception in thread "main" java.lang.NoClassDefFoundError:
> org/apache/hadoop/io/SecureIOUtils$AlreadyExistsException
> 10.61.0.143: Caused by: java.lang.ClassNotFoundException:
> org.apache.hadoop.io.SecureIOUtils$AlreadyExistsException
> 10.61.0.143: at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
> 10.61.0.143: at java.security.AccessController.doPrivileged(Native
> Method)
> 10.61.0.143: at
> java.net.URLClassLoader.findClass(URLClassLoader.java:188)
> 10.61.0.143: at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
> 10.61.0.143: at
> sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> 10.61.0.143: at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
> 10.61.0.143: at
> java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
> 10.61.0.143: Could not find the main class:
> org.apache.hadoop.mapred.TaskTracker. Program will exit.
> 10.61.0.7: Exception in thread "main" java.lang.NoClassDefFoundError:
> org/apache/hadoop/io/SecureIOUtils$AlreadyExistsException
> 10.61.0.7: Caused by: java.lang.ClassNotFoundException:
> org.apache.hadoop.io.SecureIOUtils$AlreadyExistsException
> 10.61.0.7: at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
> 10.61.0.7: at java.security.AccessController.doPrivileged(Native
> Method)
> 10.61.0.7: at
> java.net.URLClassLoader.findClass(URLClassLoader.java:188)
> 10.61.0.7: at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
> 10.61.0.7: at
> sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> 10.61.0.7: at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
> 10.61.0.7: at
> java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
> 10.61.0.7: Could not find the main class:
> org.apache.hadoop.mapred.TaskTracker. Program will exit.
>
> zhutao
>
>
--
Regards,
Simon