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From Imran Rashid <im...@therashids.com>
Subject Re: [VOTE] [SPARK-24615] SPIP: Accelerator-aware Scheduling
Date Mon, 04 Mar 2019 20:52:24 GMT
On Sun, Mar 3, 2019 at 6:51 PM Xiangrui Meng <mengxr@gmail.com> wrote:

> On Sun, Mar 3, 2019 at 10:20 AM Felix Cheung <felixcheung_m@hotmail.com>
> wrote:
>
>> IMO upfront allocation is less useful. Specifically too expensive for
>> large jobs.
>>
>
> This is also an API/design discussion.
>

I agree with Felix -- this is more than just an API question.  It has a
huge impact on the complexity of what you're proposing.  You might be
proposing big changes to a core and brittle part of spark, which is already
short of experts.

I don't see any value in having a vote on "does feature X sound cool?"  We
have to evaluate the potential benefit against the risks the feature brings
and the continued maintenance cost.  We don't need super low-level details,
but we have to a sketch of the design to be able to make that tradeoff.

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