Hi all.

Can anyone give me an example how i can programmatically authenticate from
a remote client as a particular user?

Thanks!
Denis

Hello Denis,

Here you go: http://hadoop.apache.org/common/docs/stable/Secure_Impersonation.html

On 18-Nov-2011, at 5:17 PM, Denis Kreis wrote:

> Hi all.
>
> Can anyone give me an example how i can programmatically authenticate from
> a remote client as a particular user?
>
> Thanks!
> Denis

Thank you very much!

2011/11/18 Harsh J <[EMAIL PROTECTED]>

> Hello Denis,
>
> Here you go:
> http://hadoop.apache.org/common/docs/stable/Secure_Impersonation.html
>
> On 18-Nov-2011, at 5:17 PM, Denis Kreis wrote:
>
> > Hi all.
> >
> > Can anyone give me an example how i can programmatically authenticate
> from
> > a remote client as a particular user?
> >
> > Thanks!
> > Denis
>
>

Harsh,
Does that mean to implement authentication we need to have oozie jars with
hadoop jars?

-Jignesh

On Fri, Nov 18, 2011 at 5:30 AM, Harsh J <[EMAIL PROTECTED]> wrote:

> Hello Denis,
>
> Here you go:
> http://hadoop.apache.org/common/docs/stable/Secure_Impersonation.html
>
> On 18-Nov-2011, at 5:17 PM, Denis Kreis wrote:
>
> > Hi all.
> >
> > Can anyone give me an example how i can programmatically authenticate
> from
> > a remote client as a particular user?
> >
> > Thanks!
> > Denis
>
>

The word 'oozie' is to be taken just as an example on that document. You do not need Oozie to have that functionality.

P.s. Its name is used cause Oozie is a heavy external user of that API.

On 18-Nov-2011, at 8:22 PM, Jignesh Patel wrote:

> Harsh,
> Does that mean to implement authentication we need to have oozie jars with
> hadoop jars?
>
> -Jignesh
>
> On Fri, Nov 18, 2011 at 5:30 AM, Harsh J <[EMAIL PROTECTED]> wrote:
>
>> Hello Denis,
>>
>> Here you go:
>> http://hadoop.apache.org/common/docs/stable/Secure_Impersonation.html
>>
>> On 18-Nov-2011, at 5:17 PM, Denis Kreis wrote:
>>
>>> Hi all.
>>>
>>> Can anyone give me an example how i can programmatically authenticate
>> from
>>> a remote client as a particular user?
>>>
>>> Thanks!
>>> Denis
>>
>>

On Fri, Nov 18, 2011 at 6:52 AM, Jignesh Patel <[EMAIL PROTECTED]> wrote:
>
> Harsh,
> Does that mean to implement authentication we need to have oozie jars with
> hadoop jars?

To be clear, all of the functionality is in Hadoop. The user "oozie"
was used as an example and we should probably change the example to
look more like:

<property>
  <name>hadoop.proxyuser.myproxy.groups</name>
  <value>group1,group2</value>
</property>
<property>
  <name>hadoop.proxyuser.myproxy.hosts</name>
  <value>host1,host2</value>
</property>

Which enables the "myproxy" user to impersonate "group1" or "group2"
when working on "host1" or "host2".

-- Owen