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 <[email protected]> > 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
