com.jeffy.hdfs.FileMetaData.java Source code

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Here is the source code for com.jeffy.hdfs.FileMetaData.java

Source

/*
 * Copyright AsiaInfo Authors.
 * 
 * Licensed under the Apache Software License version 2.0, available at http://www.apache.org/licenses/LICENSE-2.0
 */
package com.jeffy.hdfs;

import java.io.IOException;
import java.net.URI;
import java.util.Date;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;

/**
 * HDFS???
 * 
 * @author Jeffy<renwu58@gmail.com>
 *
 */
public class FileMetaData {
    public static void main(String[] args) {
        FileMetaData.showFileStatusForFile("hdfs://master:8020/tmp/user.csv");
    }

    public static void showFileStatusForFile(String path) {
        Configuration config = new Configuration();
        try {
            FileSystem fs = FileSystem.get(URI.create(path), config);
            FileStatus stat = fs.getFileStatus(new Path(path));
            System.out.println("File URI: " + stat.getPath().toUri().getPath());
            System.out.println("Is directory: " + stat.isDirectory());
            System.out.println("File length: " + stat.getLen());
            System.out.println("Modification Time: " + new Date(stat.getModificationTime()));
            System.out.println("File replications: " + stat.getReplication());
            System.out.println("File Block Size: " + (stat.getBlockSize() >>> 10 >>> 10) + " MB");
            System.out.println("File Owner: " + stat.getOwner());
            System.out.println("File Group: " + stat.getGroup());
            System.out.println("File Permission: " + stat.getPermission().toString());
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}