Re: Questions on LLAP and hive.server2.enable.doAs

2018-05-17 Thread Sungwoo Park 
For question 1, if hive.server2.enable.doAs is set to true, the AppMaster
fails to connect to LLAP daemons (from my experiments).

--- Sungwoo

On Fri, May 18, 2018 at 1:02 AM, Sungwoo Park  wrote:

> Hello,
>
> I have a couple of questions on LLAP and hive.server2.enable.doAs. I've
> learned that LLAP does not support hive.server2.enable.doAs=true, but
> what if we disable LLAP IO? If LLAP IO is disabled and no cache is used in
> LLAP daemons,  I guess it should be okay to allow
> hive.server2.enable.doAs=true because no data is shared between different
> queries inside LLAP daemons.
>
> So, my questions are:
>
> 1. Does LLAP always disallow hive.server2.enable.doAs=true, whether LLAP
> IO is enabled or not?
> 2. If LLAP disallows  hive.server2.enable.doAs=true even when LLAP IO is
> disabled (i.e., when cache size is set to zero), why?
>
> From my own experiments, LLAP runs fast enough even without LLAP IO. In
> such scenarios, setting hive.server2.enable.doAs=true can be useful.
>
> Thanks in advance.
>
> --- Sungwoo
>

Questions on LLAP and hive.server2.enable.doAs

2018-05-17 Thread Sungwoo Park 
Hello,

I have a couple of questions on LLAP and hive.server2.enable.doAs. I've
learned that LLAP does not support hive.server2.enable.doAs=true, but what
if we disable LLAP IO? If LLAP IO is disabled and no cache is used in LLAP
daemons,  I guess it should be okay to allow  hive.server2.enable.doAs=true
because no data is shared between different queries inside LLAP daemons.

So, my questions are:

1. Does LLAP always disallow hive.server2.enable.doAs=true, whether LLAP IO
is enabled or not?
2. If LLAP disallows  hive.server2.enable.doAs=true even when LLAP IO is
disabled (i.e., when cache size is set to zero), why?

>From my own experiments, LLAP runs fast enough even without LLAP IO. In
such scenarios, setting hive.server2.enable.doAs=true can be useful.

Thanks in advance.

--- Sungwoo