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From Hubert Zhang <hzh...@pivotal.io>
Subject Re: elastic execution engine question
Date Fri, 01 Jul 2016 01:30:30 GMT
For random table, the virtual segment number is related to the data size of
the table. For large tables, we prefer use more virtual segments to achieve
better performance. While for small tables, less virtual segments are
needed, which could save resources and enable more concurrent queries.

On Fri, Jul 1, 2016 at 9:22 AM, yanqing weng <wengyanqing@gmail.com> wrote:

> Hi HAWQ developer,
> Elastic execution engine is the important feature in HAWQ 2.0.
> I have a question for this feature in the HAWQ debugging. Is there possible
> to control the virtual segment number when run query ? If so, which GUC or
> parameter I should set ? Thanks.


Hubert Zhang

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