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From Vikas Parashar <para.vi...@gmail.com>
Subject Re: how to check hdfs
Date Tue, 03 Mar 2015 18:59:58 GMT
Hello,

  hdfs dfs -ls /home/cluster
to check the content inside.
But I get error
    ls: *No FileSystem for scheme: hdfs  --> *that means, you don't have
hdfs rpm installed at your client machine..


For answer of you question:-
./hdfs dfs -mkdir hdfs://master:9000/directory


That *directory *will be under / in your hdfs. All data would be stored in
data node; but namenode will have the meta data information. For more
details; you have to read hdfs
http://hadoop.apache.org/docs/r1.2.1/hdfs_design.html.
















On Tue, Mar 3, 2015 at 10:46 PM, Shengdi Jin <jinshengdi@gmail.com> wrote:

> I use command
> ./hdfs dfs -ls hdfs://master:9000/
> It works. So i think hdfs://master:9000/ should be the hdfs.
>
> I have another questions, if
> ./hdfs dfs -mkdir hdfs://master:9000/directory
> where should the /directory be stored?
> In DataNode or in NameNode? or in the local system of master?
>
> On Tue, Mar 3, 2015 at 8:06 AM, 杨浩 <yanghaogn@gmail.com> wrote:
>
>> I don't think it nessary to run the command with daemon in that client,
>> and hdfs is not a daemon for hadoop。
>>
>> 2015-03-03 20:57 GMT+08:00 Somnath Pandeya <Somnath_Pandeya@infosys.com>:
>>
>>>  Is your hdfs daemon running on cluster. ? ?
>>>
>>>
>>>
>>> *From:* Vikas Parashar [mailto:para.vikas@gmail.com]
>>> *Sent:* Tuesday, March 03, 2015 10:33 AM
>>> *To:* user@hadoop.apache.org
>>> *Subject:* Re: how to check hdfs
>>>
>>>
>>>
>>> Hi,
>>>
>>>
>>>
>>> Kindly install hadoop-hdfs rpm in your machine..
>>>
>>>
>>>
>>> Rg:
>>>
>>> Vicky
>>>
>>>
>>>
>>> On Mon, Mar 2, 2015 at 11:19 PM, Shengdi Jin <jinshengdi@gmail.com>
>>> wrote:
>>>
>>>      Hi all,
>>>
>>> I just start to learn hadoop, I have a naive question
>>>
>>> I used
>>>
>>>     hdfs dfs -ls /home/cluster
>>>
>>> to check the content inside.
>>>
>>> But I get error
>>>     ls: No FileSystem for scheme: hdfs
>>>
>>> My configuration file core-site.xml is like
>>> <configuration>
>>> <property>
>>>   <name>fs.defaultFS</name>
>>>   <value>hdfs://master:9000</value>
>>> </property>
>>> </configuration>
>>>
>>>
>>> hdfs-site.xml is like
>>> <configuration>
>>> <property>
>>>    <name>dfs.replication</name>
>>>    <value>2</value>
>>> </property>
>>> <property>
>>>    <name>dfs.name.dir</name>
>>>    <value>file:/home/cluster/mydata/hdfs/namenode</value>
>>> </property>
>>> <property>
>>>    <name>dfs.data.dir</name>
>>>    <value>file:/home/cluster/mydata/hdfs/datanode</value>
>>> </property>
>>> </configuration>
>>>
>>> is there any thing wrong ?
>>>
>>> Thanks a lot.
>>>
>>>
>>>
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>>
>

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