CentOS 编译hadoop 1.0.4

1. 安装ant

从http://ant.apache.org/下载最新的ant，将其解压缩，然后安装README所述的方法即可完成安装

2. 在hadoop目录下，执行ant -file build.xml进行编译，提示：

compile-rcc-compiler:
    [javac] /home/hadoop-1.0.4/build.xml:463: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds


compile-core-classes:
    [javac] /home/hadoop-1.0.4/build.xml:487: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds


compile-hdfs-classes:
    [javac] /home/hadoop-1.0.4/build.xml:576: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds
    [javac] Compiling 1 source file to /home/hadoop-1.0.4/build/classes

解决方法是进入build.xml文件，在相应的行加入：

includeantruntime="false"

3. 之后再执行ant -file build.xml，会提示：

create-native-configure:
     [exec] configure.ac:47: error: possibly undefined macro: AC_PROG_LIBTOOL
     [exec]       If this token and others are legitimate, please use m4_pattern_allow.
     [exec]       See the Autoconf documentation.
     [exec] autoreconf: /usr/bin/autoconf failed with exit status: 1

解决方法：

yum install libtool

4. 编译后，要将hadoop/build目录下的内容拷贝到集群的各个结点上，否则在mp的过程中，会提示如下错误：

2014-03-04 17:11:22,593 ERROR org.apache.hadoop.mapred.TaskTracker: Shutting down. Incompatible buildVersion.