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From: Raj K Singh <rajkrrsingh@gmail.com>
Date: Fri, 6 Jun 2014 16:21:40 +0530
Message-ID: 
 <CADcmSapGBHFZxbMybv0DpPTbNF+5hyDHZwJuVARkuvt4QQ5evw@mail.gmail.com>
Subject: Re: hadoop java connection problem
To: user@hadoop.apache.org
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have you tried to run it through "hadoop jar" instead of directly running
it through the eclipse. it seems problem with your path.

try adding conf-site.xml using conf.addResource(new Path(Vars.HADOOP_HOME
+"/conf/core-site.xml")); before passing the conf reference to the
FileSystem.get()
so that it can identify your filesystem correctly.

::::::::::::::::::::::::::::::::::::::::
Raj K Singh
http://in.linkedin.com/in/rajkrrsingh
http://www.rajkrrsingh.blogspot.com
Mobile  Tel: +91 (0)9899821370


On Fri, Jun 6, 2014 at 3:49 PM, Ekta Agrawal <ektacloudstack@gmail.com>
wrote:

> Hi,
>
> I am trying to read and write the file from HDFS.I am trying to read it
> and display it on console. It runs without giving any error, warning or
> exception but also it is not printing the data from file on console, My
> file is already saved in hdfs , I can see it on user interface. I think
> there is some problem with the path I have given, I am not sure as I am
> connecting hadoop first time to java .I am using eclipse as IDE. Can
> somebody look into this?
>
> Code:
> Path pt=new Path("hdfs://localhost:54310/user/hduser/project11/a.txt");
>  FileSystem fs = FileSystem.get(new Configuration());
>   BufferedReader br=new BufferedReader(new InputStreamReader(fs.open(pt)));
>    String line;
>                 while (( line=br.readLine()) != null){
>                                 System.out.println(line);
>                                 line=br.readLine();
>                         }
>
>  if anybody has some idea of this. Please Share.
>
> Regards,
> Ekta
>

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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-family:&#39;tre=
buchet ms&#39;,sans-serif">have you tried to run it through &quot;hadoop ja=
r&quot; instead of directly running it through the eclipse. it seems proble=
m with your path.=C2=A0</div>

<div class=3D"gmail_default" style=3D"font-family:&#39;trebuchet ms&#39;,sa=
ns-serif"><br></div><div class=3D"gmail_default" style=3D"font-family:&#39;=
trebuchet ms&#39;,sans-serif">try adding conf-site.xml using conf.addResour=
ce(new Path(Vars.HADOOP_HOME +&quot;/conf/core-site.xml&quot;)); before pas=
sing the conf reference to the=C2=A0<span style=3D"font-family:arial,sans-s=
erif;font-size:13.333333969116211px">FileSystem.get() so that it can identi=
fy your filesystem correctly.</span></div>

</div><div class=3D"gmail_extra"><br clear=3D"all"><div><div dir=3D"ltr"><f=
ont face=3D"trebuchet ms, sans-serif">:::::::::::::::::::::::::::::::::::::=
:::<br>Raj K Singh</font><div><font face=3D"trebuchet ms, sans-serif"><a hr=
ef=3D"http://in.linkedin.com/in/rajkrrsingh" target=3D"_blank">http://in.li=
nkedin.com/in/rajkrrsingh</a><br>

</font><div><font face=3D"trebuchet ms, sans-serif"><a href=3D"http://www.r=
ajkrrsingh.blogspot.com" target=3D"_blank">http://www.rajkrrsingh.blogspot.=
com</a><br>Mobile=C2=A0 Tel: +91 (0)9899821370</font><br></div></div></div>=
</div>

<br><br><div class=3D"gmail_quote">On Fri, Jun 6, 2014 at 3:49 PM, Ekta Agr=
awal <span dir=3D"ltr">&lt;<a href=3D"mailto:ektacloudstack@gmail.com" targ=
et=3D"_blank">ektacloudstack@gmail.com</a>&gt;</span> wrote:<br><blockquote=
 class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc soli=
d;padding-left:1ex">

<div dir=3D"ltr"><div>Hi,</div><div><br></div><div>I am trying to=C2=A0read=
 and write=C2=A0the file from HDFS.I am trying to read it and display it on=
 console. It runs without giving any error, warning or exception but also i=
t is not printing the data from file on console, My file is already saved i=
n hdfs ,=C2=A0I can see it on user interface.=C2=A0I think there is some pr=
oblem with=C2=A0the path I have given, I am not sure=C2=A0as I am connectin=
g hadoop first time to java=C2=A0.I am using eclipse as IDE.=C2=A0Can someb=
ody look into this?=C2=A0</div>


<div><br></div><div>Code:<br></div><div>Path pt=3Dnew Path(&quot;hdfs://loc=
alhost:54310/user/hduser/project11/a.txt&quot;);<br>=C2=A0FileSystem fs =3D=
 FileSystem.get(new Configuration());<br>=C2=A0 BufferedReader br=3Dnew Buf=
feredReader(new InputStreamReader(fs.open(pt)));<br>


=C2=A0=C2=A0 String line;<br>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 while (( line=3Dbr.readLine()=
) !=3D null){<br>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 System.out.println(l=
ine);<br>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 line=3Dbr.readLine();<br>=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 }</div>


<div><br></div><div>=C2=A0if anybody has some idea of this. Please Share.</=
div><div><br></div><div>Regards,</div><div>Ekta</div></div>
</blockquote></div><br></div>

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