I followed your advice to add the port number as follows:
% hadoop FileSystem.Cat
hdfs://localhost:9000/user/hadoop-user/input/mapred-site.xml
and it runs correctly :-)
Thank you very much!
2011/5/23, Ayon Sinha <ayonsi...@yahoo.com>:
> 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?
