Hi Ion,
Thanks!
2007/9/26, Ion Badita <[EMAIL PROTECTED]>:
> I don't know if this is useful... but you could try to use this small
> example:
>
>
> import org.apache.hadoop.fs.FileSystem;
> import org.apache.hadoop.fs.Path;
> import org.apache.hadoop.fs.FSDataOutputStream;
> import org.apache.hadoop.fs.FSDataInputStream;
> import org.apache.hadoop.conf.Configuration;
>
> import java.io.IOException;
>
> public class ReadWrite {
> public static void main(String[] args) throws IOException {
> FileSystem hdfs = FileSystem.get(new Configuration());
>
> Path path = new Path("/testfile");
>
> //writing
> FSDataOutputStream dos = hdfs.create(path);
> dos.writeUTF("Hello World");
> dos.close();
>
> //reading
> FSDataInputStream dis = hdfs.open(path);
> System.out.println(dis.readUTF());
> dis.close();
>
> hdfs.close();
> }
> }
>
>
>
> I'm assuming that you have in your classpath the hadoop-site.xml file
> correctly configured, meaning that the property "fs.default.name" has a
> valid name node for your cluster, or you could use FileSystem.getLocal()
> for local file system.
>
> John
>
>
> > Hi,
> > Are there any examples using HDFS in java program. My requirement
> > is simple: read and writer on the HDFS.
> > Thank you.
> >
> >
> >
> >
> >
> >
> >
> > Regards
> > HeQi
> >
>
>
