我正在使用 Eclipse 构建 hadoop 插件 hadoop 版本是 1.0.4 当我使用 ant builder 时，出现如下错误
compile:
[echo] contrib: eclipse-plugin
[javac] /home/shijieru/Downloads/HadoopInstall/hadoop-1.0.4/src/contrib/eclipse-plugin/build.xml:61: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds
[javac] Compiling 45 source files to /home/shijieru/Downloads/HadoopInstall/hadoop-1.0.4/build/contrib/eclipse-plugin/classes
[javac] /home/shijieru/Downloads/HadoopInstall/hadoop-1.0.4/src/contrib/eclipse-plugin/src/java/org/apache/hadoop/eclipse/Activator.java:28: error: error while writing Activator: could not create parent directories
[javac] public class Activator extends AbstractUIPlugin {
[javac] ^
[javac] Note: Some input files use or override a deprecated API.
[javac] Note: Recompile with -Xlint:deprecation for details.
[javac] Note: Some input files use unchecked or unsafe operations.
[javac] Note: Recompile with -Xlint:unchecked for details.
[javac] 1 error
BUILD FAILED
/home/shijieru/Downloads/HadoopInstall/hadoop-1.0.4/src/contrib/eclipse-plugin/build.xml:61: Compile failed; see the compiler error output for details.
Total time: 3 seconds
谁能告诉我这些问题的可能原因是什么？谢谢