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我试图让 Apache Hadoop 1.21 运行，但我得到了这个异常：

Failed to set setXIncludeAware(true) for parser org.apache.xerces.jaxp.DocumentBuilderFactoryImpl
org.apache.xerces.jaxp.DocumentBuilderFactoryImpl@2662e5cf:java.lang.UnsupportedOperationException

完整的堆栈跟踪：

13/10/17 17:22:52 ERROR conf.Configuration: Failed to set setXIncludeAware(true) for parser org.apache.xerces.jaxp.DocumentBuilderFactoryImpl@2662e5cf:java.lang.UnsupportedOperationException:  setXIncludeAware is not supported on this JAXP implementation or earlier: class org.apache.xerces.jaxp.DocumentBuilderFactoryImpl
java.lang.UnsupportedOperationException:  setXIncludeAware is not supported on this JAXP implementation or earlier: class org.apache.xerces.jaxp.DocumentBuilderFactoryImpl
    at javax.xml.parsers.DocumentBuilderFactory.setXIncludeAware(DocumentBuilderFactory.java:589)
    at org.apache.hadoop.conf.Configuration.loadResource(Configuration.java:1131)
    at org.apache.hadoop.conf.Configuration.loadResources(Configuration.java:1107)
    at org.apache.hadoop.conf.Configuration.getProps(Configuration.java:1053)
    at org.apache.hadoop.conf.Configuration.get(Configuration.java:460)
    at org.apache.hadoop.fs.FileSystem.getDefaultUri(FileSystem.java:132)
    at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:124)
    at main.JobExecutor.executeModelCreation(JobExecutor.java:223)
    at main.JobExecutor.main(JobExecutor.java:256)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:601)
    at org.apache.hadoop.util.RunJar.main(RunJar.java:160)

我一直在寻找解决方案将近 3 天，我找到了几个网站（比如这个：Hadoop“Failed to set setXIncludeAware(true) for parser”错误以及如何解决它），其中建议将 xerces 和 xalan 添加到 maven依赖关系。还有其他网站，其建议几乎相反 - 从类路径中删除所有 xerces 引用。但建议的解决方案都不是有效的:(

我也试过把：

System.setProperty("javax.xml.parsers.DocumentBuilderFactory", "com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl");

到我的代码。但这也没有帮助:(

正如我所说，我正在使用 Apache Hadoop 1.21 和 JDK 1.7.0-17。

4

2 回答 2

13

在我的情况下，它是过时的 Maven 组件依赖xerces-impl 2.4.0（由于mockrunner 1.0.3在测试阶段使用）。将托管依赖项添加到<dependencyManagemen>部分有帮助。

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>xerces</groupId>
            <artifactId>xercesImpl</artifactId>
            <version>2.11.0</version>
        </dependency>
    </dependencies>
</dependencyManagement>

Hadoop 版本是2.3.0. 这是另一篇描述类似情况的文章。

于 2014-08-05T10:51:58.987 回答
2

尝试传递 -Djavax.xml.parsers.DocumentBuilderFactory=com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl

in 作为命令 ling arg。也许您没有足够早地设置属性？

于 2013-12-03T18:28:50.547 回答