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From Jason Venner <jason.had...@gmail.com>
Subject Re: to get hadoop working around with multiple users on the same instance
Date Sun, 22 Nov 2009 02:49:01 GMT
disable hdfs permission checking

<property>
  <name>dfs.permissions</name>
  <value>true</value>
  <description>
    If "true", enable permission checking in HDFS.
    If "false", permission checking is turned off,
    but all other behavior is unchanged.
    Switching from one parameter value to the other does not change the
mode,
    owner or group of files or directories.
  </description>
</property>

On Fri, Nov 20, 2009 at 1:46 AM, Jeff Zhang <zjffdu@gmail.com> wrote:

> On Fri, Nov 20, 2009 at 4:39 PM, Siddu <siddu.sjce@gmail.com> wrote:
>
> > On Fri, Nov 20, 2009 at 1:25 PM, Jeff Zhang <zjffdu@gmail.com> wrote:
> >
> > > In the client machine, configure the core-site.xml, hdfs.xml and
> > mapred.xml
> > > as you do in the hadoop cluster.
> > >
> >
> > if you are referring to client machine as a place from where you launch
> M/R
> > jobs
> >
> >  There is no client machine as such . It just one machine am
> experimenting
> > on (pseudo distributed file system)
> >
>
> *    You can still connect the machine if it run  pseudo distributed file
> system. But in the configuration files, use the real ip refer the machine
> rather than using localhost.*
>
>
>
> > then you can run dfs shell command in the client's machine
> > >
> > >
> > > Jeff Zhang
> > >
> > >
> > >
> > > On Fri, Nov 20, 2009 at 3:38 PM, Siddu <siddu.sjce@gmail.com> wrote:
> > >
> > > > Hello all,
> > > >
> > > > I am not sure if the question is framed right !
> > > >
> > > > Lets say user1 launches an instance of hadoop on *single node* , and
> > > hence
> > > > he has permission to create,delete files on hdfs or launch M/R jobs .
> > > >
> > > > now what should i do if user2 wants to use the same instance of
> hadoop
> > > > which
> > > > is launched by user1  and needs permission to create delete files on
> > hdfs
> > > > or
> > > > launch M/R jobs
> > > >
> > > > i am using 0.20 version ..... of hadoop and Ubuntu as the host
> machine
> > > >
> > > > Thanks for any inputs
> > > >
> > > >
> > > > --
> > > > Regards,
> > > > ~Sid~
> > > > I have never met a man so ignorant that i couldn't learn something
> from
> > > him
> > > >
> > >
> >
> >
> >
> > --
> > Regards,
> > ~Sid~
> > I have never met a man so ignorant that i couldn't learn something from
> him
> >
>



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