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https://issues.apache.org/jira/browse/TAJO-540?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13909576#comment-13909576
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Min Zhou commented on TAJO-540:
-------------------------------
Here is a comment from [~mafish] on TAJO-611
{quote}
Hi There,
I've done some basic investigation on the discovery service. Min give a very
detailed discussion about the resource managements on the comment section of
Tajo-540. That's very useful for me. Thanks Min. Now I have some questions to
discuss.
What's the current resource management mechanism in Tajo and what are related
classes? Based on your previous discussion, it seems Tajo uses Yarn, but not at
CPU/Memory level. Do we need a resource management with more granularity? It
seem this question is more related to Tajo-540.
{quote}
Yarn support cpu/memory kind of resource management. Tajo right now can't
accurately calculate the exact cpu/memory resource a task should acquire for,
it instead ask for a rough number of those resource from Yarn. Nevertheless, at
least tajo support resource management in both Yarn and Standalone modes, we
can improve it after statistics get more affluent.
> (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
> Assignee: Min Zhou
> Fix For: 1.0-incubating
>
>
> 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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