关于HDFS的JAVA api和Failed to set setXIncludeAware(true) for parser 的问题

请教一下HDFS的api是以下这样用吗？
org.apache.hadoop.conf.Configuration conf = new org.apache.hadoop.conf.Configuration();
fs = FileSystem.get(URI.create("String"), conf);

我之前几次都能读写 但是后面再运行的时候就出现了以下的错误
急求解答！！


13/04/17 03:26:36 ERROR conf.Configuration: Failed to set setXIncludeAware(true) for parser org.apache.xerces.jaxp.DocumentBuilderFactoryImpl@17aea99: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(Unknown Source)
at org.apache.hadoop.conf.Configuration.loadResource(Configuration.java:1135)
at org.apache.hadoop.conf.Configuration.loadResources(Configuration.java:1111)
at org.apache.hadoop.conf.Configuration.getProps(Configuration.java:1055)
at org.apache.hadoop.conf.Configuration.set(Configuration.java:431)
at org.apache.hadoop.conf.Configuration.setBoolean(Configuration.java:611)
at org.apache.hadoop.util.GenericOptionsParser.processGeneralOptions(GenericOptionsParser.java:303)
at org.apache.hadoop.util.GenericOptionsParser.parseGeneralOptions(GenericOptionsParser.java:413)
at org.apache.hadoop.util.GenericOptionsParser.<init>(GenericOptionsParser.java:164)
at org.apache.hadoop.util.GenericOptionsParser.<init>(GenericOptionsParser.java:147)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:59)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
at org.owen.hadoop.web.log.analyze.Main$1.actionPerformed(Main.java:40)