Miki, Prashant,
Curiously I've got the same need as you do. I've started to work on
this problem few weeks ago by patching Hadoop client code. Here is what I
have so far https://github.com/vladistan/hadoop-common/commits/cloudera-cdh3u5
I only tried it on with the Cloudera's CDH3 hadoop, because this is the
only version I run on all my clusters. To use the patch, checkout the branch
above, compile with ant ( make sure build the 'tar' file ).
Then unpack the tar somewhere, set your HADOOP_HOME variable to the new
location and try to use Pig as is.
I've been testing it for the past few days, it works okay with locally
launched hadoop and pig jobs. Also works with Hamake and map reduce jobs, but
for some reason it fails with hamake and pig scripts. I am currently
investigating why is that.
So you are welcome to try the patch above, let me know how it works for
you. Just bear in mind that the patch above is still work in progress and it
is just a quick hack to get things going fast. For proper production use I
recommend you install your cluster with Kerberos security and use kerberos
mechanism to authenticate as different users.
-- Vlad
Hi Miki,
What version of hadoop are you on? I can confirm this works on 0.20.2 but
never tried this on the newer versions.
Try hadoop.job.ugi=<username,group> where the group must be the name of the
group associated with the username.
For eg, -Dhadoop.job.ugi=bugs,bugs
On Sat, Dec 1, 2012 at 2:42 AM, Miki Tebeka <[email protected]> wrote:
> I tried running
> PIG_OPTS=-Dhadoop.user.ugi=bugs pig /path/to/script.pig
>
> Still ran as the original user.
>
>
> On Thu, Nov 29, 2012 at 2:42 PM, Miki Tebeka <[email protected]>
> wrote:
>
> > As in -Dhadoop.user.ugi=bugs ?
> >
> >
> > On Wed, Nov 28, 2012 at 5:02 PM, Prashant Kommireddi <
> [email protected]>wrote:
> >
> >> Try using "hadoop.job.ugi" to run the jobs as a different user on the
> >> cluster. I'm not sure if that works on the more recent versions of
> >> Hadoop though.
> >>
> >> Sent from my iPhone
> >>
> >> On Nov 29, 2012, at 6:28 AM, Miki Tebeka <[email protected]> wrote:
> >>
> >> > Greetings,
> >> >
> >> > Is there a way, other than "su", to run pig script as a different
> user?
> >> >
> >> > Thanks,
> >> > --
> >> > Miki
> >>
> >
> >
>
