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From Larry McCay <lmc...@hortonworks.com>
Subject Re: How to login a user with password to Kerberos Hadoop instead of ticket cache or key tab file ?
Date Mon, 06 Oct 2014 19:08:40 GMT
Well, it seems to be committed to branch-2 - so I assume it will make it
into the next 2.x release.


On Mon, Oct 6, 2014 at 2:51 PM, Xiaohua Chen <xiaohua.chen@gmail.com> wrote:

> Hi Larry,
>
> Thanks! This is the very right approach I am looking for.  Currently
> I am using Hadoop 2.3.0 , seems this API
> UserGroupInformation.getUGIFromSubject(subject) is only available from
> Hadoop 3.0.0 , which seems is not released yet. So when can I expect
> to get the downloadable for Hadoop 3.0.0 ?
>
> Thank you very much and best regards!
>
> Sophia
>
>
>
> On Mon, Oct 6, 2014 at 10:57 AM, Larry McCay <lmccay@hortonworks.com>
> wrote:
> > You may find this approach interesting.
> > https://issues.apache.org/jira/browse/HADOOP-10342
> >
> > The idea is that you preauthenticate using JAAS/krb5 or something in your
> > application and then leverage the resulting java Subject to assert the
> > authenticated identity.
> >
> > On Mon, Oct 6, 2014 at 1:51 PM, Xiaohua Chen <xiaohua.chen@gmail.com>
> wrote:
> >>
> >> Hi Experts,
> >>
> >> We have a use case which needs to login user into Kerberos hadoop
> >> using the kerberos user's name and password.
> >>
> >> I have searched around and only found that
> >> 1) one can login a user  from ticket cache ( this is the default one)
> or
> >> 2) login a user from this user's keytab file e.g.
> >>  UserGroupInformation.loginUserFromKeytabAndReturnUGI("sochen",
> >> "/tmp/sochen.keytab"));
> >>
> >> Can you shed some light how I can login a user using his kerberos
> >> password and get a UserGroupInformation object so I can invoke
> >> doAs(....) to access the HDFS file system ?
> >>
> >> Thanks a lot!
> >>
> >> Sophia
> >
> >
> >
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