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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5188) FairScheduler performance bug
Date Wed, 01 Jun 2016 05:17:13 GMT

    [ https://issues.apache.org/jira/browse/YARN-5188?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15309278#comment-15309278
] 

Hadoop QA commented on YARN-5188:
---------------------------------

| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 19s {color} | {color:blue}
Docker mode activated. {color} |
| {color:green}+1{color} | {color:green} @author {color} | {color:green} 0m 0s {color} | {color:green}
The patch does not contain any @author tags. {color} |
| {color:red}-1{color} | {color:red} test4tests {color} | {color:red} 0m 0s {color} | {color:red}
The patch doesn't appear to include any new or modified tests. Please justify why no new tests
are needed for this patch. Also please list what manual steps were performed to verify this
patch. {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 6m 24s {color}
| {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 30s {color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 21s {color}
| {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 34s {color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 13s {color}
| {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 0m 49s {color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 19s {color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m 27s {color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 25s {color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 25s {color} | {color:green}
the patch passed {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red} 0m 17s {color} | {color:red}
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager: The
patch generated 11 new + 71 unchanged - 0 fixed = 82 total (was 71) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 30s {color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 9s {color}
| {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} whitespace {color} | {color:red} 0m 0s {color} | {color:red}
The patch has 5 line(s) that end in whitespace. Use git apply --whitespace=fix. {color} |
| {color:red}-1{color} | {color:red} whitespace {color} | {color:red} 0m 0s {color} | {color:red}
The patch 6 line(s) with tabs. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 0m 56s {color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 16s {color} |
{color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 34m 46s {color} | {color:red}
hadoop-yarn-server-resourcemanager in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 15s {color}
| {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 48m 8s {color} | {color:black}
{color} |
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|| Reason || Tests ||
| Failed junit tests | hadoop.yarn.server.resourcemanager.TestClientRMTokens |
|   | hadoop.yarn.server.resourcemanager.TestAMAuthorization |
|   | hadoop.yarn.server.resourcemanager.scheduler.fair.TestFairSchedulerPreemption |
|   | hadoop.yarn.server.resourcemanager.scheduler.fair.TestAppRunnability |
|   | hadoop.yarn.server.resourcemanager.scheduler.fair.TestMaxRunningAppsEnforcer |
|   | hadoop.yarn.server.resourcemanager.scheduler.fair.TestFSLeafQueue |
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|| Subsystem || Report/Notes ||
| Docker |  Image:yetus/hadoop:2c91fd8 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12807321/YARN-5188.patch
|
| JIRA Issue | YARN-5188 |
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  unit  findbugs
 checkstyle  |
| uname | Linux 410074df29a2 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 |
| Build tool | maven |
| Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / 8ceb06e |
| Default Java | 1.8.0_91 |
| findbugs | v3.0.0 |
| checkstyle | https://builds.apache.org/job/PreCommit-YARN-Build/11783/artifact/patchprocess/diff-checkstyle-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager.txt
|
| whitespace | https://builds.apache.org/job/PreCommit-YARN-Build/11783/artifact/patchprocess/whitespace-eol.txt
|
| whitespace | https://builds.apache.org/job/PreCommit-YARN-Build/11783/artifact/patchprocess/whitespace-tabs.txt
|
| unit | https://builds.apache.org/job/PreCommit-YARN-Build/11783/artifact/patchprocess/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager.txt
|
| unit test logs |  https://builds.apache.org/job/PreCommit-YARN-Build/11783/artifact/patchprocess/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager.txt
|
|  Test Results | https://builds.apache.org/job/PreCommit-YARN-Build/11783/testReport/ |
| modules | C: hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager
U: hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager |
| Console output | https://builds.apache.org/job/PreCommit-YARN-Build/11783/console |
| Powered by | Apache Yetus 0.3.0   http://yetus.apache.org |


This message was automatically generated.



> FairScheduler performance bug
> -----------------------------
>
>                 Key: YARN-5188
>                 URL: https://issues.apache.org/jira/browse/YARN-5188
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: fairscheduler
>    Affects Versions: 2.5.0, 2.8.0
>            Reporter: ChenFolin
>         Attachments: YARN-5188.patch
>
>
>  My Hadoop Cluster has recently encountered a performance problem. Details as Follows.
>        
>        The efficiency of assign container in the Resourcemanager may fall when the number
of running and pending application grows. And the fact is the cluster has too many PendingMB
or PengdingVcore , and the Cluster 
> current utilization rate may below 20%.
>        I checked the resourcemanager logs, I found that every assign container may cost
5 ~ 10 ms, but just 0 ~ 1 ms at usual time.
>      
>        I use TestFairScheduler to reproduce the scene:
>  
>        Just one queue: root.defalut
>      10240 apps.
>  
>        assign container avg time:  6753.9 us ( 6.7539 ms)  
>      apps sort time (FSLeafQueue : Collections.sort(runnableApps, comparator); ): 4657.01
us ( 4.657 ms )
>      compute LeafQueue Resource usage : 905.171 us ( 0.905171 ms )
>      
>      When just root.default, one assign container op contains : ( one apps sort op )
+ 2 * ( compute leafqueue usage op )
>        According to the above situation, I think the assign container op has a performance
problem  . 



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