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https://issues.apache.org/jira/browse/YARN-3491?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14529984#comment-14529984
]
Hadoop QA commented on YARN-3491:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch | 14m 53s | 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 1 new or modified test files. |
| {color:green}+1{color} | javac | 7m 50s | There were no new javac warning
messages. |
| {color:green}+1{color} | javadoc | 10m 3s | 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:green}+1{color} | checkstyle | 0m 49s | 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 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 17s | The patch does not introduce
any new Findbugs (version 2.0.3) warnings. |
| {color:red}-1{color} | yarn tests | 49m 44s | Tests failed in
hadoop-yarn-server-resourcemanager. |
| | | 87m 16s | |
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|| Reason || Tests ||
| Failed unit tests | hadoop.yarn.server.resourcemanager.TestClientRMTokens |
| | hadoop.yarn.server.resourcemanager.TestRMRestart |
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|| Subsystem || Report/Notes ||
| Patch URL |
http://issues.apache.org/jira/secure/attachment/12730708/YARN-3385.004.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / 90b3845 |
| hadoop-yarn-server-resourcemanager test log |
https://builds.apache.org/job/PreCommit-YARN-Build/7725/artifact/patchprocess/testrun_hadoop-yarn-server-resourcemanager.txt
|
| Test Results |
https://builds.apache.org/job/PreCommit-YARN-Build/7725/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/7725/console |
This message was automatically generated.
> PublicLocalizer#addResource is too slow.
> ----------------------------------------
>
> Key: YARN-3491
> URL: https://issues.apache.org/jira/browse/YARN-3491
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: nodemanager
> Affects Versions: 2.7.0
> Reporter: zhihai xu
> Assignee: zhihai xu
> Priority: Critical
> Labels: BB2015-05-TBR
> Attachments: YARN-3491.000.patch, YARN-3491.001.patch,
> YARN-3491.002.patch, YARN-3491.003.patch, YARN-3491.004.patch
>
>
> Based on the profiling, The bottleneck in PublicLocalizer#addResource is
> getInitializedLocalDirs. getInitializedLocalDirs call checkLocalDir.
> checkLocalDir is very slow which takes about 10+ ms.
> The total delay will be approximately number of local dirs * 10+ ms.
> This delay will be added for each public resource localization.
> Because PublicLocalizer#addResource is slow, the thread pool can't be fully
> utilized. Instead of doing public resource localization in
> parallel(multithreading), public resource localization is serialized most of
> the time.
> And also PublicLocalizer#addResource is running in Dispatcher thread,
> So the Dispatcher thread will be blocked by PublicLocalizer#addResource for
> long time.
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