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From Pala M Muthaia <mchett...@rocketfuelinc.com>
Subject Re: Enabling Tez sessions on HiveServer2
Date Tue, 02 Dec 2014 23:23:37 GMT
Ok.

Turns out that if i use the same JDBC connection, each successive query
from the same user gets submitted to the same Tez application. If i create
a different JDBC connection for each query, then each query runs in its own
Tez application.

On Tue, Dec 2, 2014 at 2:42 PM, Hitesh Shah <hitesh@apache.org> wrote:

> BCC’ed user@tez.
>
> This question belongs to either the hive user list or the Hortonworks user
> forums.
>
> thanks
> — Hitesh
>
> On Dec 2, 2014, at 1:28 PM, Pala M Muthaia <mchettiar@rocketfuelinc.com>
> wrote:
>
> > Hi,
> >
> > I am trying to get Tez sessions enabled with HS2. I start the
> HiveServer2 instance with the flag "-hiveconf hive.execution.engine=tez"
> and then try to submit multiple queries one after another, as the same
> user, to the HS2 instance.
> >
> > When i check the YARN UI, i find that each query of mine is launched as
> a new YARN application. While the new Tez application is running, the old
> Tez applications are still alive. This is different from Tez session in
> Hive CLI, where multiple queries are submitted to the same Tez application
> (if launched within the Tez session timeout).
> >
> >
> > I followed the config instructions at
> http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.1.2/bk_installing_manually_book/content/rpm-chap-tez-configure_hive_for_tez.html
> so far.
> >
> > Is there a separate config flag that i need to turn on for Tez sessions
> on HS2? How should i enable Tez sessions with HiveServer2.
> >
> >
> > -pala
>
>

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