Hi Hive users,

I was just wondering why hive thrift server is not running as a daemon
process by default. Also I am not seeing any option to start it as a daemon
process if I want to.
I am remotely login in to the hadoop cluster and every time my session is
either disconnecting or closing - thrift server is going down also.
I can however start it as background process by "nohup" or using "&" in
linux - but just thinking  - "Is there a reason why this feature is not
present in hive ?"
What would happen if I have hive thrift server will run as daemon process ?

Regards,
Praveenesh

Hi Praveenesh

have a look at
http://blog.milford.io/2010/06/daemonizing-the-apache-hive-thrift-server-on-centos/
:)

Thanks .

On Thu, Jun 14, 2012 at 1:57 PM, praveenesh kumar <[EMAIL PROTECTED]>wrote:

> Hi Hive users,
>
> I was just wondering why hive thrift server is not running as a daemon
> process by default. Also I am not seeing any option to start it as a daemon
> process if I want to.
> I am remotely login in to the hadoop cluster and every time my session is
> either disconnecting or closing - thrift server is going down also.
> I can however start it as background process by "nohup" or using "&" in
> linux - but just thinking  - "Is there a reason why this feature is not
> present in hive ?"
> What would happen if I have hive thrift server will run as daemon process ?
>
> Regards,
> Praveenesh
>

--
*Ric Dong *
Newegg Ecommerce, MIS department

A really quick (but by no means as good) solution is to use screen.

http://www.gnu.org/software/screen/

Phil.

On 14 June 2012 13:38, dong.yajun <[EMAIL PROTECTED]> wrote:
> Hi Praveenesh
>
> have a look at
> http://blog.milford.io/2010/06/daemonizing-the-apache-hive-thrift-server-on-centos/
> :)
>
> Thanks .
>
>
> On Thu, Jun 14, 2012 at 1:57 PM, praveenesh kumar <[EMAIL PROTECTED]>
> wrote:
>>
>> Hi Hive users,
>>
>> I was just wondering why hive thrift server is not running as a daemon
>> process by default. Also I am not seeing any option to start it as a daemon
>> process if I want to.
>> I am remotely login in to the hadoop cluster and every time my session is
>> either disconnecting or closing - thrift server is going down also.
>> I can however start it as background process by "nohup" or using "&" in
>> linux - but just thinking  - "Is there a reason why this feature is not
>> present in hive ?"
>> What would happen if I have hive thrift server will run as daemon process
>> ?
>>
>> Regards,
>> Praveenesh
>
>
>
>
> --
> Ric Dong
> Newegg Ecommerce, MIS department
>
>

Guys,
Thanks for the replies.
However -- I am using tar balls (not binary cloudera distribution) so I am
not sure whether the script mentioned will run. Anyways, there are ways to
make thrift server run as daemon/background process -- that I also agree.

But Coming to my original question --
Why this feature is not present in Hive by default ?
I have used HBase, Cassandra -- both of them have these options of running
thrift servers as a daemon process.
I am interested to know what bad could happen if hive thrift server will
run as daemon process, so that I can understand the risks involved in
running it as daemon process and can proper decision on how shall I run it
in my production environment?

If I am correct, there should be some risk involved if I have thrift server
running as background process, thats why its not there in hive by default.
If I understand it correctly, running thrift server as daemon process, will
allow multiple user to share common metastore_db, which could risk in data
security as different users can see each other tables/data -- they can mess
around with each other's table/data -- Am I correct here ? or Are there
more risks involved here ?

Regards,
Praveenesh

On Thu, Jun 14, 2012 at 6:11 PM, Philip Tromans
<[EMAIL PROTECTED]>wrote:

> A really quick (but by no means as good) solution is to use screen.
>
> http://www.gnu.org/software/screen/
>
> Phil.
>
> On 14 June 2012 13:38, dong.yajun <[EMAIL PROTECTED]> wrote:
> > Hi Praveenesh
> >
> > have a look at
> >
> http://blog.milford.io/2010/06/daemonizing-the-apache-hive-thrift-server-on-centos/
> > :)
> >
> > Thanks .
> >
> >
> > On Thu, Jun 14, 2012 at 1:57 PM, praveenesh kumar <[EMAIL PROTECTED]>
> > wrote:
> >>
> >> Hi Hive users,
> >>
> >> I was just wondering why hive thrift server is not running as a daemon
> >> process by default. Also I am not seeing any option to start it as a
> daemon
> >> process if I want to.
> >> I am remotely login in to the hadoop cluster and every time my session
> is
> >> either disconnecting or closing - thrift server is going down also.
> >> I can however start it as background process by "nohup" or using "&" in
> >> linux - but just thinking  - "Is there a reason why this feature is not
> >> present in hive ?"
> >> What would happen if I have hive thrift server will run as daemon
> process
> >> ?
> >>
> >> Regards,
> >> Praveenesh
> >
> >
> >
> >
> > --
> > Ric Dong
> > Newegg Ecommerce, MIS department
> >
> >
>

There is no particular reason this feature is not in hive. We just
left the deamonize part for others to do how they felt appropriate.

On Thu, Jun 14, 2012 at 1:57 AM, praveenesh kumar <[EMAIL PROTECTED]> wrote:
> Hi Hive users,
>
> I was just wondering why hive thrift server is not running as a daemon
> process by default. Also I am not seeing any option to start it as a daemon
> process if I want to.
> I am remotely login in to the hadoop cluster and every time my session is
> either disconnecting or closing - thrift server is going down also.
> I can however start it as background process by "nohup" or using "&" in
> linux - but just thinking  - "Is there a reason why this feature is not
> present in hive ?"
> What would happen if I have hive thrift server will run as daemon process ?
>
> Regards,
> Praveenesh