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From Jiali Yao <j...@pivotal.io>
Subject Re: Performance issue about HAWQ 2.0 beta
Date Fri, 27 Nov 2015 08:59:14 GMT
Hi Leon

Thanks for providing it. The result is not as we expected. In our
performance test, we found the performance is comparable with 1.3.
Could you please some more information:
1. Get segment configuration information from 1.3 and 2.0
select * from gp_segment_configuration ;
2. Could you please run "explain analyze" to get more statistic information?
3. Want to confirm with you: The result run in yarn mode ,right? Also I see
your previous email to indicate there is some error in yarn, these query is
also from that test round, right?



On Fri, Nov 27, 2015 at 3:43 PM, Leon Zhang <leoncamel@gmail.com> wrote:

> Hi, HAWQ Developers:
>    As my previous email hint, I run TPC-DS test on our development.
> Comparing with previous version 1.3.x, we can see the performance
> improvement on most of queries.
>    But the problem is performance reduction for *some* queries. For
> example, the query64, the running time increase from 10754.688 ms
> to 68884.731 ms . I am not sure if any changes were made that increase the
> running time?
>    In order to discuss the detail about this issue, I would like use the
> query10. The running time increase from 1795.746 ms to 744919.251 ms. I
> also attache the sql about this query, and the query plan for this query.
>    Thanks

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