Hi Jin, Please check your hdfs-site.xml in which we specify; what will be our hdfs path on our local machine.
Below are the parameter that will help you to understand; dfs.namenode.name.dir dfs.datanode.name.dir Rg: Vicky On Wed, Mar 4, 2015 at 1:34 AM, Shengdi Jin <jinshen...@gmail.com> wrote: > Thanks Vikas. > > I run ./hdfs dfs -ls /home/cluster on machine running namenode. > Do I need to configure a client machine? > > In my opinion, I suspect that the local fs /home/cluster is not configured > as hdfs. > In core-site.xml, I set the hdfs as hdfs://master:9000. > So I think that's why the command ./hdfs dfs-ls hdfs://master:9000/ can > work. > > Please correct me, if i was wrong. > > On Tue, Mar 3, 2015 at 1:59 PM, Vikas Parashar <para.vi...@gmail.com> > wrote: > >> 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 <jinshen...@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 <yangha...@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_pand...@infosys.com >>>> >: >>>> >>>>> Is your hdfs daemon running on cluster. ? ? >>>>> >>>>> >>>>> >>>>> *From:* Vikas Parashar [mailto:para.vi...@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 <jinshen...@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. >>>>> >>>>> >>>>> >>>>> **************** CAUTION - Disclaimer ***************** >>>>> This e-mail contains PRIVILEGED AND CONFIDENTIAL INFORMATION intended >>>>> solely >>>>> for the use of the addressee(s). If you are not the intended recipient, >>>>> please >>>>> notify the sender by e-mail and delete the original message. Further, you >>>>> are not >>>>> to copy, disclose, or distribute this e-mail or its contents to any other >>>>> person and >>>>> any such actions are unlawful. This e-mail may contain viruses. Infosys >>>>> has taken >>>>> every reasonable precaution to minimize this risk, but is not liable for >>>>> any damage >>>>> you may sustain as a result of any virus in this e-mail. You should carry >>>>> out your >>>>> own virus checks before opening the e-mail or attachment. Infosys >>>>> reserves the >>>>> right to monitor and review the content of all messages sent to or from >>>>> this e-mail >>>>> address. Messages sent to or from this e-mail address may be stored on the >>>>> Infosys e-mail system. >>>>> ***INFOSYS******** End of Disclaimer ********INFOSYS*** >>>>> >>>>> >>>> >>> >> >
