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From "Ashwin Shankar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3111) Fix ratio problem on FairScheduler page
Date Wed, 18 Mar 2015 17:58:38 GMT

    [ https://issues.apache.org/jira/browse/YARN-3111?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14367563#comment-14367563
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Ashwin Shankar commented on YARN-3111:
--------------------------------------

I dont think 1 is done in the patch. My bad, I wasn't clear. In 1 what I was suggesting was
that - "represent that resource of steady/instant/max on the bar which is dominant in usage
or used resources", so that, steady/instant/max/usage on the bar all finally represent ONE
dimension in that bar/queue. So lets say usage of the queue is (20% mem, 60 % vcore), then
steady/instant/max/usage would all display only vcore.

bq. 3 is good, but one question is that parent queue has no tooltip now, but it has its own
bar.
Parent queues(except root) have a tooltip, I just checked in trunk. Can you check again ?

bq. And think over 3 & 4, what about listing all resources's usage percent on the text
on the right of each bar? Maybe color red for dominant resource? or just judge it by comparing
percent number?
It would be nice to have that with the color, however I'm concerned that it might look ugly
from UE perspective.

bq. And also what do you think of the issue I mentioned above? I think it still can happen
after 1 & 2, cause for one queue: steady, fair, max, usage resource may have different
dominant resource type. If I make a mistake here, please let me know.
I believe this is clarified in the first paragraph of this comment. Let me know if you still
have this concern.

> Fix ratio problem on FairScheduler page
> ---------------------------------------
>
>                 Key: YARN-3111
>                 URL: https://issues.apache.org/jira/browse/YARN-3111
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: fairscheduler
>    Affects Versions: 2.6.0
>            Reporter: Peng Zhang
>            Assignee: Peng Zhang
>            Priority: Minor
>         Attachments: YARN-3111.1.patch, YARN-3111.png
>
>
> Found 3 problems on FairScheduler page:
> 1. Only compute memory for ratio even when queue schedulingPolicy is DRF.
> 2. When min resources is configured larger than real resources, the steady fair share
ratio is so long that it is out the page.
> 3. When cluster resources is 0(no nodemanager start), ratio is displayed as "NaN% used"
> Attached image shows the snapshot of above problems. 



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