使用HDFS java api 建立檔案出錯。

//建立檔案核心代碼public static void createNewHDFSFile(String toCreateFilePath, String content) throws IOException{Configuration config = new Configuration();config.set("hadoop.job.ugi", "Administrator,supergroup");FileSystem hdfs = FileSystem.get(config);FSDataOutputStream os = hdfs.create(new Path(toCreateFilePath));os.write(content.getBytes("UTF-8"));os.close();hdfs.close();}

使用： createNewHDFSFile("/tmp/create2.c", "hello");

錯誤資訊： 

Exception in thread "main" java.io.IOException: Cannot run program "chmod": CreateProcess error=2, ?????????at java.lang.ProcessBuilder.start(ProcessBuilder.java:459)at org.apache.hadoop.util.Shell.runCommand(Shell.java:149)at org.apache.hadoop.util.Shell.run(Shell.java:134)at org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:286)at org.apache.hadoop.util.Shell.execCommand(Shell.java:354)at org.apache.hadoop.util.Shell.execCommand(Shell.java:337)at org.apache.hadoop.fs.RawLocalFileSystem.execCommand(RawLocalFileSystem.java:481)at org.apache.hadoop.fs.RawLocalFileSystem.setPermission(RawLocalFileSystem.java:473)at org.apache.hadoop.fs.FilterFileSystem.setPermission(FilterFileSystem.java:280)at org.apache.hadoop.fs.ChecksumFileSystem.create(ChecksumFileSystem.java:372)at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:484)at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:465)at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:372)at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:364)at com.geoway.hadoop.example.HadoopFSOperations.createNewHDFSFile(HadoopFSOperations.java:54)at com.geoway.hadoop.example.HadoopFSOperations.main(HadoopFSOperations.java:15)Caused by: java.io.IOException: CreateProcess error=2, ?????????at java.lang.ProcessImpl.create(Native Method)at java.lang.ProcessImpl.<init>(ProcessImpl.java:81)at java.lang.ProcessImpl.start(ProcessImpl.java:30)at java.lang.ProcessBuilder.start(ProcessBuilder.java:452)... 15 more

 不知道什麼原因 ，哪位能告訴我？