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https://issues.apache.org/jira/browse/YARN-3965?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14647799#comment-14647799
 ] 

Hadoop QA commented on YARN-3965:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch |  17m  2s | 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 |   8m 16s | There were no new javac warning 
messages. |
| {color:green}+1{color} | javadoc |  10m 19s | 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:red}-1{color} | checkstyle |   0m 41s | The applied patch generated  2 
new checkstyle issues (total was 46, now 48). |
| {color:green}+1{color} | whitespace |   0m  0s | The patch has no lines that 
end in whitespace. |
| {color:green}+1{color} | install |   1m 24s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 32s | The patch built with 
eclipse:eclipse. |
| {color:green}+1{color} | findbugs |   1m 21s | The patch does not introduce 
any new Findbugs (version 3.0.0) warnings. |
| {color:green}+1{color} | yarn tests |   6m 14s | Tests passed in 
hadoop-yarn-server-nodemanager. |
| | |  46m 16s | |
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|| Subsystem || Report/Notes ||
| Patch URL | 
http://issues.apache.org/jira/secure/attachment/12747995/YARN-3965-3.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / ddc867ce |
| checkstyle |  
https://builds.apache.org/job/PreCommit-YARN-Build/8715/artifact/patchprocess/diffcheckstylehadoop-yarn-server-nodemanager.txt
 |
| hadoop-yarn-server-nodemanager test log | 
https://builds.apache.org/job/PreCommit-YARN-Build/8715/artifact/patchprocess/testrun_hadoop-yarn-server-nodemanager.txt
 |
| Test Results | 
https://builds.apache.org/job/PreCommit-YARN-Build/8715/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/8715/console |


This message was automatically generated.

> Add starup timestamp for nodemanager
> ------------------------------------
>
>                 Key: YARN-3965
>                 URL: https://issues.apache.org/jira/browse/YARN-3965
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: nodemanager
>            Reporter: Hong Zhiguo
>            Assignee: Hong Zhiguo
>            Priority: Minor
>         Attachments: YARN-3965-2.patch, YARN-3965-3.patch, YARN-3965.patch
>
>
> We have startup timestamp for RM already, but don't for NM.
> Sometimes cluster operator modified configuration of all nodes and kicked off 
> command to restart all NMs.  He found out it's hard for him to check whether 
> all NMs are restarted.  Actually there's always some NMs didn't restart as he 
> expected, which leads to some error later due to inconsistent configuration.
> If we have startup timestamp for NM,  the operator could easily fetch it via 
> NM webservice and find out which NM didn't restart, and take mannaul action 
> for it.



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