我试图使用JAVA列出HDFS中的所有目录和文件.
Configuration configuration = new Configuration(); FileSystem fs = FileSystem.get(new URI("hdfs://ip address"), configuration); FileStatus[] fileStatus = fs.listStatus(new Path("hdfs://ip address/user/uname/")); Path[] paths = FileUtil.stat2Paths(fileStatus); for(FileStatus status : fileStatus){ System.out.println(status.getPath().toString()); }
我的代码能够生成fs对象,但卡在第3行,在这里它尝试读取文件的文件夹和文件.我正在使用AWS.
请帮我解决这个问题.
这对我有用..
public static void main(String[] args) throws IOException, URISyntaxException { Configuration conf = new Configuration(); FileSystem fs = FileSystem.get(new URI("hdfs://localhost:9000/"), conf); FileStatus[] fileStatus = fs.listStatus(new Path("hdfs://localhost:9000/")); for(FileStatus status : fileStatus){ System.out.println(status.getPath().toString()); } }
产量
hdfs://localhost:9000/All.txt hdfs://localhost:9000/department.txt hdfs://localhost:9000/emp.tsv hdfs://localhost:9000/employee.txt hdfs://localhost:9000/hbase
它认为你给的是不正确的uri.尝试按照代码做.
如果未设置conf,则必须添加资源文件
conf.addResource(new Path("/home/kishore/BigData/hadoop/etc/hadoop/core-site.xml")); conf.addResource(new Path("/home/kishore/BigData/hadoop/etc/hadoop/hdfs-site.xml"));