hadoop hdfs异常：DistributedFileSystem cannot be cast to FileSystem

[luffy3546]

java代码如下：
Configuration conf = new Configuration();
conf.set("fs.default.name", "hdfs://namenode:9000");
FileSystem fileSystem = FileSystem.get(conf);

报错：java.lang.ClassCastException: org.apache.hadoop.hdfs.DistributedFileSystem cannot be cast to org.apache.hadoop.fs.FileSystem
at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:1377)
at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:66)
at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:1390)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:196)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:95)

求高手解答！~

[luffy3546]

没人遇到过吗？救急啊！~

[iss0720]

java.lang.ClassCastException: org.apache.hadoop.hdfs.DistributedFileSystem cannot be cast to org.apache.hadoop.fs.FileSystem 遇到了同样的问题，感觉像是ClassLoader的问题，请问你如何解决的？

[oTaoTao1234567892012]

Configuration conf = new Configuration();
String uri = "hdfs://localhost:9000/";
try {
FileSystem fs = FileSystem.get(URI.create(uri), conf);
DistributedFileSystem hdfs = (DistributedFileSystem) fs;