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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3920) FairScheduler Reserving a node for a container should be configurable to allow it used only for large containers
Date Sat, 29 Aug 2015 03:01:46 GMT

    [ https://issues.apache.org/jira/browse/YARN-3920?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14720937#comment-14720937
] 

Hadoop QA commented on YARN-3920:
---------------------------------

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| (/) *{color:green}+1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch |  19m  3s | Pre-patch trunk compilation is healthy. |
| {color:green}+1{color} | @author |   0m  0s | The patch does not contain any @author tags.
|
| {color:green}+1{color} | tests included |   0m  0s | The patch appears to include 2 new
or modified test files. |
| {color:green}+1{color} | javac |   8m 52s | There were no new javac warning messages. |
| {color:green}+1{color} | javadoc |   9m 57s | There were no new javadoc warning messages.
|
| {color:green}+1{color} | release audit |   0m 23s | The applied patch does not increase
the total number of release audit warnings. |
| {color:green}+1{color} | checkstyle |   0m 55s | There were no new checkstyle issues. |
| {color:green}+1{color} | whitespace |   0m  1s | The patch has no lines that end in whitespace.
|
| {color:green}+1{color} | install |   1m 26s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 33s | The patch built with eclipse:eclipse.
|
| {color:green}+1{color} | findbugs |   1m 27s | The patch does not introduce any new Findbugs
(version 3.0.0) warnings. |
| {color:green}+1{color} | yarn tests |  53m 25s | Tests passed in hadoop-yarn-server-resourcemanager.
|
| | |  96m  8s | |
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|| Subsystem || Report/Notes ||
| Patch URL | http://issues.apache.org/jira/secure/attachment/12753105/YARN-3920.005.patch
|
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / e2c9b28 |
| hadoop-yarn-server-resourcemanager test log | https://builds.apache.org/job/PreCommit-YARN-Build/8939/artifact/patchprocess/testrun_hadoop-yarn-server-resourcemanager.txt
|
| Test Results | https://builds.apache.org/job/PreCommit-YARN-Build/8939/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf904.gq1.ygridcore.net 3.13.0-36-lowlatency #63-Ubuntu SMP PREEMPT Wed Sep
3 21:56:12 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux |
| Console output | https://builds.apache.org/job/PreCommit-YARN-Build/8939/console |


This message was automatically generated.

> FairScheduler Reserving a node for a container should be configurable to allow it used
only for large containers
> ----------------------------------------------------------------------------------------------------------------
>
>                 Key: YARN-3920
>                 URL: https://issues.apache.org/jira/browse/YARN-3920
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: fairscheduler
>            Reporter: Anubhav Dhoot
>            Assignee: Anubhav Dhoot
>         Attachments: YARN-3920.004.patch, YARN-3920.004.patch, YARN-3920.004.patch, YARN-3920.004.patch,
YARN-3920.005.patch, yARN-3920.001.patch, yARN-3920.002.patch, yARN-3920.003.patch
>
>
> Reserving a node for a container was designed for preventing large containers from starvation
from small requests that keep getting into a node. Today we let this be used even for a small
container request. This has a huge impact on scheduling since we block other scheduling requests
until that reservation is fulfilled. We should make this configurable so its impact can be
minimized by limiting it for large container requests as originally intended. 



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