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From Henry Robinson <he...@cloudera.com>
Subject Re: About Cooperating For A Better Impala
Date Wed, 16 Mar 2016 17:07:06 GMT
(impala-dev@cloudera.org to bcc, +dev@impala.incubator.apache.org)

On 16 March 2016 at 10:06, Jim Apple <jbapple@cloudera.com> wrote:

> I'm sure everyone will be delighted to have more communication and
> cooperation, including reading the papers and the code. Can you share those
> today, or is that part of the "puzzle" of "sharing intermediate results"?
> Is there anything we can do to help with your puzzlement?
>
> On Wednesday, March 16, 2016 at 12:11:05 AM UTC-7, 林言 wrote:
>>
>> Dear Sir/Madam:
>>             Hello! I am Yan Lin, a master candidate in ZheJiang
>> University(CHN) in laboratory "PCL" (http://percom.zju.edu.cn/). Our lab
>> has done many works on Impala, as follows:
>>                 1. We proposed an Impala query optimization method based
>> on bushy-tree and an IMPROVED-MCCHYP algorithm [1]. And we implemented
>> our method and algorithm in Impala.
>>                 2. We proposed a replication-selection based scheduling
>> algorithm and implemented it in Impala [2].
>>                 3. Some of my fellows are now developing a simulator of
>> Impala called ImpalaSim and writing the corresponding paper [3].
>>             Recently, we put our focus on multi-query optimization which sufficiently
exploits
>> common sub-expressions of batched queries and improves the efficiency. We
>> have modified some source code, and the modified Impala can already
>> execute multiple queries in the same query context. But we still feel
>> puzzled with sharing intermediate results. We hope for more
>> communication and cooperation in every aspect. We all want a better
>> Impala.
>>             Thank you for your attention! Hope to hear from you soon!
>>
>>
>>                       Yours Sincerely,
>>
>>
>>                               Yan Lin
>>
>>             Reference:
>>             [1]
>> Bushy Tree and Improved-McCHyp Algorithm Based Impala Query Optimization
>>             [2]
>> Replication-Selection based Scheduling for Impala Parallel Query Execution
>>             [3] ImpalaSim:Discrete Event Simulation Platform for Impala
>> System
>> ------------------------------
>> Yan Lin
>>
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-- 
Henry Robinson
Software Engineer
Cloudera
415-994-6679

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