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https://issues.apache.org/jira/browse/TAJO-540?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14206035#comment-14206035
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Jihoon Son commented on TAJO-540:
---------------------------------
[~jhkim], thanks for your reply.
I meant, we need to talk about implementation goals, problems which can be
introduced in the implementation, and solutions of those problems.
If you want to implement a Sparrow-like query scheduler, the implementation
goals will be low-latency and load balancing. (It would be much greater if the
SLA scheme is supported.)
Since you take over this issue from [~coderplay] after quite a long time has
passed, I wondered your intention.
Anyway, you seem to implement a Sparrow-like query scheduler.
Is it a just porting of Sparrow to Tajo?
Even though it is, it would be great for us to understand your implementation
if you share your problem solving approach at a logical level, instead of
implementation level.
> (Umbrella) Implement Tajo Query Scheduler
> -----------------------------------------
>
> Key: TAJO-540
> URL: https://issues.apache.org/jira/browse/TAJO-540
> Project: Tajo
> Issue Type: New Feature
> Reporter: Hyunsik Choi
>
> Currently, there is no Tajo query scheduler. So, all queries launched
> simultaneously compete cluster resource which is managed by
> TajoResourceManager.
> In this issue, we will investigate, design, and implement a Tajo query
> scheduler. This is an umbrella issue for that. We will create subtasks for
> them.
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