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From Chen Li <che...@gmail.com>
Subject Re: Histograms and statistics on Asterix
Date Wed, 30 Dec 2015 18:49:16 GMT
I am a big supporter/believer of moving all docs to wiki to start
accumulating such knowledge for "the next generation" :-)

Chen

On Fri, Dec 18, 2015 at 11:12 AM, Till Westmann <tillw@apache.org> wrote:
> Sounds like a good idea to me - especially if the doc has been mentioned on
> this list :)
>
> If/when the code actually gets committed into master, I also think that we
> should transfer to content to ASF infrastructure (site/wiki).
>
> Cheers,
> Till
>
>
> On 18 Dec 2015, at 19:37, Jianfeng Jia wrote:
>
>> Should we link all these kind of docs to wiki? (just the sharable link,
>> don’t have to copy the content.) :-)
>>
>>> On Dec 18, 2015, at 10:18 AM, Ildar Absalyamov
>>> <ildar.absalyamov@gmail.com> wrote:
>>>
>>> Hi Wail,
>>>
>>> I do have some doc which can give you some idea of how stats collection
>>> will work
>>> https://docs.google.com/document/d/12aP8Pzp68b_HxJe-svFmG9dHFX6zliGw-ErNSd_Av3I/edit?usp=sharing
>>> <https://docs.google.com/document/d/12aP8Pzp68b_HxJe-svFmG9dHFX6zliGw-ErNSd_Av3I/edit?usp=sharing>.
>>> But it does not describe the statistical synopsis format. We were planning
>>> to use wavelets instead to histograms for these LSM-based statistics. Let me
>>> know if you want to know more on how wavelets work and why they should be
>>> used.
>>>
>>>> On Dec 18, 2015, at 07:23, Wail Alkowaileet <wael.y.k@gmail.com> wrote:
>>>>
>>>> Good to know.
>>>> Is there any type of design document ?
>>>>
>>>> P.S. Sattam told me that there was some sort of a comparative study
>>>> shows
>>>> the difference in performance of open vs. closed types. Where can I find
>>>> it?
>>>>
>>>> Thanks!
>>>>
>>>> On Thu, Dec 17, 2015 at 9:16 PM, Mike Carey <dtabass@gmail.com> wrote:
>>>>
>>>>> Ildar is working on that (camping on the LSM lifecycle) and Wenhai is
>>>>> doing some work on histograms that's intended for in-flight use during
>>>>> query processing (to do dynamic partitioning, e.g., during parallel
>>>>> sorts
>>>>> and joins).
>>>>>
>>>>>
>>>>> On 12/17/15 1:53 AM, Wail Alkowaileet wrote:
>>>>>
>>>>>> Hi Devs,
>>>>>>
>>>>>> I want to ask if there's any on going work on building histograms
and
>>>>>> stats
>>>>>> for Asterix ?
>>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>>
>>>> *Regards,*
>>>> Wail Alkowaileet
>>>
>>>
>>> Best regards,
>>> Ildar
>>>
>>
>>
>>
>> Best,
>>
>> Jianfeng Jia
>> PhD Candidate of Computer Science
>> University of California, Irvine

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