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From Harshad Deshmukh <hars...@cs.wisc.edu>
Subject Re: [Design Discussion] StorageManager in PolicyEnforcer in Distributed Case
Date Tue, 21 Jun 2016 04:56:44 GMT
Hi Zuyu,

I understand your concern on non-availability of storage manager in 
distributed case.

I am not sure I fully understand the following proposal:
 > Could Foreman creates QueryManagers directly, instead of 
Can you elaborate?

Right now, storage manager is propagated from Foreman -> Policy Enforcer 
-> Query Manager -> Query Context. Developing some kind of late binding 
mechanism of storage manager can be one possible solution.

On 06/20/2016 12:42 PM, Zuyu Zhang wrote:
> Hi Harshad,
> I am working on the distributed query execution engine, and would like 
> to have a discussion regarding how both PolicyEnforcer and 
> QueryManager fit into the distributed case.
> I was wondering if we could remove using StorageManager in 
> PolicyEnforcer. In other words, could Foreman creates QueryManagers 
> directly, instead of PolicyEnforcer::admitQuery?
> The main concern is that like in Foreman, PolicyEnforcer will be 
> created in ForemanDistributed, which, however, does not have access to 
> StorageManager in the distributed case.
> Any thoughts?
> Cheers,
> Zuyu


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