Re: hdfs-doubt

[Rasit OZDAS <ra...@gmail.com>]

It seems that either NameNode or DataNode is not started.
You can take a look at log files, and paste related lines here.

2009/3/29 deepya <m_...@yahoo.co.in>:
>
> Thanks,
>
> 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
> blk_-5733385806393158149_1053
>
> 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
>
> SreeDeepya
>
>
> 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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> Sent from the Hadoop core-user mailing list archive at Nabble.com.
>
>



-- 
M. Raşit ÖZDAŞ