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MapReduce >> mail # user >> Re: Hadoop client user


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Re: Hadoop client user


Thanks Harsh. That is a very good explanation.

I am trying to understand how in a production cluster, hadoop user and hadoop clients would be. 

What users should exist in NN, JT, DN ? 

Regards,
Rajendra
________________________________
 From: Harsh J <[EMAIL PROTECTED]>
To: "<[EMAIL PROTECTED]>" <[EMAIL PROTECTED]>
Sent: Thursday, August 29, 2013 1:25 AM
Subject: Re: Hadoop client user
 

The user1 will mainly require a home directory on the HDFS, created by
the HDFS administrator user ('hadoop' in your case): sudo -u hadoop
hadoop fs -mkdir /user/user1; sudo -u hadoop hadoop fs -chown
user1:user1 /user/user1. After this, the user should be able to run
jobs and manipulate files in their own directory.

On Thu, Aug 29, 2013 at 10:21 AM, Hadoop Raj <[EMAIL PROTECTED]> wrote:
> Hi,
>
> I have a hadoop learning environment on a pseudo distributed mode. It is owned by the user 'hadoop'.
>
> I am trying to get an understanding on how can another user on this box can act as a Hadoop client and able to create HDFS files and run Map Reduce jobs. Say I have a Linux user 'user1'.
>
> What permissions , privileges and configuration settings are required for 'user1' to act as a Hadoop client?
>
> Thanks,
> Raj

--
Harsh J
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