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From deepya <m_dee...@yahoo.co.in>
Subject Re: hdfs-doubt
Date Sun, 29 Mar 2009 08:24:12 GMT


I have another doubt.I just want to run the examples and see how it works.I
am trying to copy the file from local file system to hdfs using the command

  bin/hadoop fs -put conf input

It is giving the following error.
09/03/29 05:50:54 INFO hdfs.DFSClient: Exception in createBlockOutputStream
java.net.NoRouteToHostException: No route to host
09/03/29 05:50:54 INFO hdfs.DFSClient: Abandoning block

I have only one datanode in my cluster and my replication factor is also
1(as configured in the conf file in hadoop-site.xml).Can you please provide
the solution for this.

Thanks in advance


sree deepya wrote:
> Hi sir/madam,
> I am SreeDeepya,doing Mtech in IIIT.I am working on a project named cost
> effective and scalable storage server.Our main goal of the project is to
> be
> able to store images in a server and the data can be upto petabytes.For
> that
> we are using HDFS.I am new to hadoop and am just learning about it.
>     Can you please clarify some of the doubts I have.
> At present we configured one datanode and one namenode.Jobtracker is
> running
> on namenode and tasktracker on datanode.Now namenode also acts as
> client.Like we are writing programs in the namenode to store or retrieve
> images.My doubts are
> 1.Can we put the client and namenode in two separate systems?
> 2.Can we access the images from the datanode of hadoop cluster from a
> machine in which hdfs is not there?
> 3.At present we may not have data upto petabytes but will be in
> gigabytes.Is
> hadoop still efficient in storing mega and giga bytes of data????
> Thanking you,
> Yours sincerely,
> SreeDeepya

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