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From Henry Robinson <>
Subject Re: Request for feedback: IMPALA-2550 Introduce query-wide execution context.
Date Wed, 20 Jul 2016 17:15:15 GMT
Could you say something about the use cases you're trying to address?
That'll make it easier to review the design.

On 20 July 2016 at 10:08, Lars Volker <> wrote:

> Hi all,
> I started drafting a header file for a query-wide QueryExecState class
> here:
> It's not much and I couldn't figure out how much of the overall changes
> needed for RPC batching should be included in this change. Most notably we
> might want to replace FragmentExecState in FragmentMgr (now QueryExecMgr)
> with QueryExecState altogether and drive execution from that class. On the
> other hand keeping the QueryExecState as simple as possible for now would
> make the change less intrusive.
> I'd be glad for feedback on this first draft.
> Thanks, Lars

Henry Robinson
Software Engineer

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