com.ema.hadoop.test_hdfs.TestWrite.java Source code

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Here is the source code for com.ema.hadoop.test_hdfs.TestWrite.java

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package com.ema.hadoop.test_hdfs;

import java.io.BufferedWriter;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import static java.lang.System.out;
import java.net.URI;
import java.net.URISyntaxException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.util.Progressable;

/**
 *
 * @author student
 */
public class TestWrite {

    public static void main(String[] args) throws IOException, URISyntaxException {

        Configuration configuration = new Configuration();
        FileSystem hdfs = FileSystem.get(new URI("hdfs://localhost:9000"), configuration);
        Path file = new Path("hdfs://localhost:9000/user/student/text_file_write.txt");
        if (hdfs.exists(file)) {
            hdfs.delete(file, true);
        }
        OutputStream os = hdfs.create(file, new Progressable() {
            @Override
            public void progress() {
                out.println("...bytes written");
            }
        });
        BufferedWriter br = new BufferedWriter(new OutputStreamWriter(os, "UTF-8"));
        br.write("This is just a test to check if it is possible to write a file on HDFS using the Java API");
        br.close();
        hdfs.close();

    }

}