Are you able to run the hdfs filesystem shell commands? Can you try adding the
port number of the namenode in the
URI hdfs://localhost/user/hadoop-user/input/mapred-site.xml ?
-Ayon
See My Photos on Flickr
Also check out my Blog for answers to commonly asked questions.
________________________________
From: Yang Xiaoliang <yangxiaoliang2...@gmail.com>
To: hdfs-user@hadoop.apache.org; Ayon Sinha <ayonsi...@yahoo.com>
Sent: Sunday, May 22, 2011 9:51 AM
Subject: Re: FileSystemCat ipc.Client: Retrying connect to server:
yes , I sure of that.
2011/5/23, Ayon Sinha <ayonsi...@yahoo.com>:
> Is yours hdfs running?
>
> -Ayon
> See My Photos on Flickr
> Also check out my Blog for answers to commonly asked questions.
>
>
>
> ________________________________
> From: Yang Xiaoliang <yangxiaoliang2...@gmail.com>
> To: hdfs-user@hadoop.apache.org
> Sent: Sunday, May 22, 2011 7:23 AM
> Subject: FileSystemCat ipc.Client: Retrying connect to server:
>
> Hi All,
>
> I am just reading the book *Hadoop: The Definitive Guide *by Tom White,
> there is an example for the *FileSystem* class in chapter 3,
> example3-2:
> ------------------------------------------------------------------------------------------
> public class FileSystemCat {
>
> import java.io.InputStream;
> import java.net.URI;
>
> import org.apache.hadoop.conf.Configuration;
> import org.apache.hadoop.fs.FileSystem;
> import org.apache.hadoop.fs.Path;
> import org.apache.hadoop.io.IOUtils;
>
> public static void main(String[] args) throws Exception {
> String uri = args[0];
> Configuration conf = new Configuration();
> FileSystem fs = FileSystem.get(URI.create(uri), conf);
> InputStream in = null;
> try {
> in = fs.open(new Path(uri));
> IOUtils.copyBytes(in, System.out, 4096, false);
> } finally {
> IOUtils.closeStream(in);
> }
> }
> }
> ---------------------------------------------------------------------------------------------
> I run the program as follows:
> % export HADOOP_CLASSPATH=.
> % hadoop FileSystem.Cat
> hdfs://localhost/user/hadoop-user/input/mapred-site.xml
>
> and then, what i got was as fllows:
>
> ipc.Client: Retrying connect to server: localhost/127.0.0.1:8020. Already
> tried 0 time(s).
> 11/05/22 20:45:53 INFO ipc.Client: Retrying connect to server: localhost/
> 127.0.0.1:8020. Already tried 1 time(s).
> 11/05/22 20:45:53 INFO ipc.Client: Retrying connect to server: localhost/
> 127.0.0.1:8020. Already tried 1 time(s).
> 11/05/22 20:45:54 INFO ipc.Client: Retrying connect to server: localhost/
> 127.0.0.1:8020. Already tried 2 time(s).
> ....................................
>
> can anyone help?
