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Date: Thu, 27 Aug 2015 22:22:46 +0000 (UTC)
From: "Hadoop QA (JIRA)" <jira@apache.org>
To: yarn-issues@hadoop.apache.org
Message-ID: <JIRA.12844788.1436820788000.188247.1440714166848@Atlassian.JIRA>
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 <JIRA.12844788.1436820788818@arcas>
Subject: [jira] [Commented] (YARN-3920) FairScheduler Reserving a node for a
 container should be configurable to allow it used only for large containers
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    [ https://issues.apache.org/jira/browse/YARN-3920?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14717659#comment-14717659 ] 

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

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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:red}-1{color} | pre-patch |  15m 57s | Findbugs (version ) appears to be broken on trunk. |
| {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  2s | There were no new javac warning messages. |
| {color:green}+1{color} | javadoc |  10m 10s | There were no new javadoc warning messages. |
| {color:green}+1{color} | release audit |   0m 22s | The applied patch does not increase the total number of release audit warnings. |
| {color:red}-1{color} | checkstyle |   0m 41s | The applied patch generated  127 new checkstyle issues (total was 0, now 127). |
| {color:red}-1{color} | whitespace |   0m  1s | The patch has 1  line(s) that end in whitespace. Use git apply --whitespace=fix. |
| {color:green}+1{color} | install |   1m 35s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 33s | The patch built with eclipse:eclipse. |
| {color:green}+1{color} | findbugs |   1m 33s | The patch does not introduce any new Findbugs (version 3.0.0) warnings. |
| {color:red}-1{color} | yarn tests |  53m 43s | Tests failed in hadoop-yarn-server-resourcemanager. |
| | |  92m 44s | |
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|| Reason || Tests ||
| Failed unit tests | hadoop.yarn.server.resourcemanager.webapp.TestRMWebServicesAppsModification |
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|| Subsystem || Report/Notes ||
| Patch URL | http://issues.apache.org/jira/secure/attachment/12752847/YARN-3920.004.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / a9c8ea7 |
| checkstyle |  https://builds.apache.org/job/PreCommit-YARN-Build/8931/artifact/patchprocess/diffcheckstylehadoop-yarn-server-resourcemanager.txt |
| whitespace | https://builds.apache.org/job/PreCommit-YARN-Build/8931/artifact/patchprocess/whitespace.txt |
| hadoop-yarn-server-resourcemanager test log | https://builds.apache.org/job/PreCommit-YARN-Build/8931/artifact/patchprocess/testrun_hadoop-yarn-server-resourcemanager.txt |
| Test Results | https://builds.apache.org/job/PreCommit-YARN-Build/8931/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf905.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/8931/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-3920.001.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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