Hadoop2.2.0在Ubuntu编译失败解决方法

[INFO] ------------------------------------------------------------------------[INFO] BUILD FAILURE[INFO] ------------------------------------------------------------------------[INFO] Total time: 1:29.469s[INFO] Finished at: Mon Nov 18 12:30:36 PST 2013[INFO] Final Memory: 37M/120M[INFO] ------------------------------------------------------------------------[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.5.1:testCompile (default-testCompile) on project hadoop-auth: Compilation failure: Compilation failure:[ERROR] /home/chuan/trunk/hadoop-common-project/hadoop-auth/src/test/java/org/apache/hadoop/security/authentication/client/AuthenticatorTestCase.java:[84,13] cannot access org.mortbay.component.AbstractLifeCycle[ERROR] class file for org.mortbay.component.AbstractLifeCycle not found[ERROR] server = new Server(0);[ERROR] /home/chuan/trunk/hadoop-common-project/hadoop-auth/src/test/java/org/apache/hadoop/security/authentication/client/AuthenticatorTestCase.java:[94,29] cannot access org.mortbay.component.LifeCycle[ERROR] class file for org.mortbay.component.LifeCycle not found[ERROR] server.getConnectors()[0].setHost(host);[ERROR] /home/chuan/trunk/hadoop-common-project/hadoop-auth/src/test/java/org/apache/hadoop/security/authentication/client/AuthenticatorTestCase.java:[96,10] cannot find symbol[ERROR] symbol  : method start()[ERROR] location: class org.mortbay.jetty.Server[ERROR] /home/chuan/trunk/hadoop-common-project/hadoop-auth/src/test/java/org/apache/hadoop/security/authentication/client/AuthenticatorTestCase.java:[102,12] cannot find symbol[ERROR] symbol  : method stop()[ERROR] location: class org.mortbay.jetty.Server[ERROR] -> [Help 1][ERROR][ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.[ERROR] Re-run Maven using the -X switch to enable full debug logging.[ERROR][ERROR] For more information about the errors and possible solutions, please read the following articles:[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException[ERROR][ERROR] After correcting the problems, you can resume the build with the command[ERROR]   mvn <goals> -rf :hadoop-auth

 这里是Hadoop官网给出的该错误信息，即hadoop-auth没法编译通过，这里是直接把它们给出的错误信息粘贴过来了，如果你也遇到这个错误的话，可以找到hadoop目录下的hadoop-common-project/hadoop-auth文件夹下，可以看到在这下面有一个.pom文件，因为hadoop是用maven进行构建的，而pom文件是maven构建的必要文件，pom对于maven就相当于make对于Makefile,但是又不是完全相同的，因为pom文件中会给出项目构建所依赖的jar包，由maven自动进行依赖包的下载，从而实现对项目的构建。

这里的修改方法是在这个pom文件中的第58行加入

<artifactId>jetty-util</artifactId>      <scope>test</scope>    </dependency>   <dependency>      <groupId>org.mortbay.jetty</groupId>       <artifactId>jetty</artifactId>当然可能因为下载的hadoop版本不同在所在行数上有所不同，具体的可以参见，https://issues.apache.org/jira/secure/attachment/12614482/HADOOP-10110.patch 这时hadoop官方提供的一个补丁，加入这些依赖之后，再进行构建，这里就没有问题了