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MapReduce >> mail # user >> Re: Which is hdfs?


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Re: Which is hdfs?
Both are inside hdfs

One file is under your name other is under system user hdfs name.

Hadoop fs  command says i am accessing hdfs.

Read about hdfs append in 2.x version.
On 09/12/2013 6:22 PM, "unmesha sreeveni" <[EMAIL PROTECTED]> wrote:

> Can anyone tell me what is the difference between the below details
>
> My cluster is a remote system "sree".
>
> 1. I have a "chck" file in my /home/sree
>    I did
>             > hadoop fs -copFromLocal /home/sree/chck
>             > hadoop fs -ls
>
>                        -rw-r--r--   1 *sree*     supergroup         32
> 2013-12-03 14:27 chck
>
>                *  whether chck file is now resided in hdfs?*
> 2.After executing wordcount in my remote system my output folder looks
> like this
>
>                    drwxr-xr-x   - *hdfs*      supergroup          0
> 2013-11-19 09:41 wcout
>
>
> I have a confusion -  which is *hdfs*?
> The area where *chck* resided or *wcout* ?
>
>
> 3. Am i able to update/append "chck" file through MR job?
>
> 4.  -rw-r--r--   1 *hdfs*     supergroup         32 2013-12-03 14:27
> myfile
>     Am i able to update/append "myfile" file through MR job?
>
> **I read that updation is not allowed in hdfs**
>
> --
> *Thanks & Regards*
>
> Unmesha Sreeveni U.B
>
> *Junior Developer*
>
>
>
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB