Pig-0.13.0如何编译

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1、下载pig到本地目录，运行ant。

[wukong@bd23 pig-0.13.0]$ ant clean jar-withouthadoop -Dhadoopversion=23
Buildfile: build.xml
BUILD FAILED
/home/wukong/usr/pig-0.13.0/build.xml:750: Problem: failed to create task or type scriptdef
Cause: the class org.apache.tools.ant.taskdefs.optional.script.ScriptDef was not found.
        This looks like one of Ant's optional components.
Action: Check that the appropriate optional JAR exists in
        -/usr/share/ant/lib
        -/home/wukong/.ant/lib
        -a directory added on the command line with the -lib argument
Do not panic, this is a common problem.
The commonest cause is a missing JAR.
This is not a bug; it is a configuration problem

Total time: 1 second

2、失败的原因是centos自带的ant功能不全（这一步的ant报错可参考Hadoop集群中pig工具的安装过程记录）。解决办法是自行安装ant最新版本（这里安装的是ant-1.9.4）并配置环境变量。以下是参考配置方法

[wukong@bd23 apache-ant-1.9.4]$ pwd
/usr/local/apache-ant-1.9.4

[wukong@bd23 apache-ant-1.9.4]$ vim /etc/profile
......
export JAVA_HOME=/usr/local/jdk1.7.0_65
export ANT_HOME=/usr/local/apache-ant-1.9.4
export MAVEN_HOME=/usr/local/apache-maven-3.2.2
export CLASSPATH=$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib
export PATH=$JAVA_HOME/bin:$ANT_HOME/bin:$MAVEN_HOME/bin:$PATH

3、安装配置并source配置文件后，再次运行ant。经过大概一套煎饼果子加一碗豆腐脑的功夫，基本上就运行结束了。然后你会发现还是不对。。。

[wukong@bd23 pig-0.13.0]$ ant clean jar-withouthadoop -Dhadoopversion=23
...... 
[ivy:resolve]     http://repository.jboss.com/nexus/content/groups/public/org/mortbay/jetty/jetty/6.1.26/jetty-6.1.26.zip
[ivy:resolve]   ==== apache-snapshots: tried
[ivy:resolve]     http://repository.apache.org/content/groups/snapshots-group/org/mortbay/jetty/jetty/6.1.26/jetty-6.1.26.zip
[ivy:resolve]           ::::::::::::::::::::::::::::::::::::::::::::::
[ivy:resolve]           ::          UNRESOLVED DEPENDENCIES         ::
[ivy:resolve]           ::::::::::::::::::::::::::::::::::::::::::::::
[ivy:resolve]           :: com.sun.jersey#jersey-bundle;1.8: not found
[ivy:resolve]           :: com.sun.jersey#jersey-server;1.8: not found
[ivy:resolve]           :: com.sun.jersey.contribs#jersey-guice;1.8: configuration not found in com.sun.jersey.contribs#jersey-guice;1.8: 'master'. It was required from org.apache.pig#pig;0.13.1-SNAPSHOT hadoop23
[ivy:resolve]           ::::::::::::::::::::::::::::::::::::::::::::::
[ivy:resolve]           ::::::::::::::::::::::::::::::::::::::::::::::
[ivy:resolve]           ::              FAILED DOWNLOADS            ::
[ivy:resolve]           :: ^ see resolution messages for details  ^ ::
[ivy:resolve]           ::::::::::::::::::::::::::::::::::::::::::::::
[ivy:resolve]           :: org.mortbay.jetty#jetty;6.1.26!jetty.zip
[ivy:resolve]           ::::::::::::::::::::::::::::::::::::::::::::::
[ivy:resolve] :::: ERRORS
[ivy:resolve]   SERVER ERROR: Connection timed out url=http://repo2.maven.org/maven2/xmlenc/xmlenc/0.52/xmlenc-0.52-sources.jar
[ivy:resolve]   SERVER ERROR: Connection timed out url=http://repo2.maven.org/maven2/xmlenc/xmlenc/0.52/xmlenc-0.52-src.jar
[ivy:resolve]   SERVER ERROR: Connection timed out url=http://repo2.maven.org/maven2/xmlenc/xmlenc/0.52/xmlenc-0.52-javadoc.jar
[ivy:resolve]   SERVER ERROR: Connection timed out url=http://repo2.maven.org/maven2/com/sun/jersey/jersey-bundle/1.8/jersey-bundle-1.8.pom
[ivy:resolve]   SERVER ERROR: Connection timed out url=http://repo2.maven.org/maven2/com/sun/jersey/jersey-bundle/1.8/jersey-bundle-1.8.jar
[ivy:resolve]   SERVER ERROR: Backend is unhealthy url=http://repo2.maven.org/maven2/com/sun/jersey/jersey-server/1.8/jersey-server-1.8.pom
[ivy:resolve]   SERVER ERROR: Connection timed out url=http://repo2.maven.org/maven2/com/sun/jersey/jersey-server/1.8/jersey-server-1.8.jar
[ivy:resolve]   SERVER ERROR: Connection timed out url=http://repo2.maven.org/maven2/com/sun/jersey/contribs/jersey-guice/1.8/jersey-guice-1.8.pom
[ivy:resolve] 
[ivy:resolve] :: USE VERBOSE OR DEBUG MESSAGE LEVEL FOR MORE DETAILS
BUILD FAILED
/home/wukong/usr/pig-0.13.0/build.xml:1599: impossible to resolve dependencies:
        resolve failed - see output for details
Total time: 13 minutes 25 seconds

4、导致以上问题的原因是下载jersey-1.8和jetty-6.1.26失败。所以要下载并且导入maven。导入命令如下

mvn install:install-file  -Dfile=外部包的路径 \
                          -DgroupId=外部包的groupId \
                          -DartifactId=外部包的artifactId \
                          -Dversion=外部包的版本号 \
                          -Dpackaging=jar

[wukong@bd23 pig-0.13.0]$ mvn install:install-file -Dfile=/home/wukong/res/jersey-archive-1.18.zip -DgroupId=com.sun.jersey -DartifactId=jersey-core -Dversion=1.8 -Dpackaging=zip

[wukong@bd23 pig-0.13.0]$ mvn install:install-file -Dfile=/home/wukong/res/jetty-6.1.26.zip -DgroupId=org.mortbay.jetty -DartifactId=jetty -Dversion=6.1.26 -Dpackaging=zip

5、导入后再次编译，发现还是不行。真泥马坑爹。。

[ivy:resolve] :: problems summary ::
[ivy:resolve] :::: WARNINGS
[ivy:resolve]           ::::::::::::::::::::::::::::::::::::::::::::::
[ivy:resolve]           ::          UNRESOLVED DEPENDENCIES         ::
[ivy:resolve]           ::::::::::::::::::::::::::::::::::::::::::::::
[ivy:resolve]           :: com.sun.jersey.contribs#jersey-guice;1.8: configuration not found in com.sun.jersey.contribs#jersey-guice;1.8: 'master'. It was required from org.apache.pig#pig;0.13.1-SNAPSHOT hadoop23
[ivy:resolve]           ::::::::::::::::::::::::::::::::::::::::::::::
[ivy:resolve] 
[ivy:resolve] :: USE VERBOSE OR DEBUG MESSAGE LEVEL FOR MORE DETAILS
BUILD FAILED
/home/wukong/usr/pig-0.13.0/build.xml:1599: impossible to resolve dependencies:
        resolve failed - see output for details

6、然后再在maven中安装jersey-guice-1.8

[wukong@bd23 pig-0.13.0]$ mvn install:install-file  -Dfile=/home/wukong/res/jersey-guice-1.8.jar -DgroupId=com.sun.jersey.contribs -DartifactId=jersey-guice -Dversion=1.8 -Dpackaging=jar

7、再次用ant build pig。终于过了！

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