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https://issues.apache.org/jira/browse/YARN-3793?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14602002#comment-14602002
 ] 

Hadoop QA commented on YARN-3793:
---------------------------------

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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch |  15m 44s | 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 25s | There were no new javac warning 
messages. |
| {color:green}+1{color} | javadoc |   9m 28s | There were no new javadoc 
warning messages. |
| {color:green}+1{color} | release audit |   0m 21s | The applied patch does 
not increase the total number of release audit warnings. |
| {color:red}-1{color} | checkstyle |   0m 37s | The applied patch generated  1 
new checkstyle issues (total was 17, now 17). |
| {color:green}+1{color} | whitespace |   0m  0s | The patch has no lines that 
end in whitespace. |
| {color:green}+1{color} | install |   1m 33s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 31s | The patch built with 
eclipse:eclipse. |
| {color:green}+1{color} | findbugs |   1m  9s | The patch does not introduce 
any new Findbugs (version 3.0.0) warnings. |
| {color:green}+1{color} | yarn tests |   6m 20s | Tests passed in 
hadoop-yarn-server-nodemanager. |
| | |  43m 11s | |
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|| Subsystem || Report/Notes ||
| Patch URL | 
http://issues.apache.org/jira/secure/attachment/12741937/YARN-3793.01.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / aa5b15b |
| checkstyle |  
https://builds.apache.org/job/PreCommit-YARN-Build/8349/artifact/patchprocess/diffcheckstylehadoop-yarn-server-nodemanager.txt
 |
| hadoop-yarn-server-nodemanager test log | 
https://builds.apache.org/job/PreCommit-YARN-Build/8349/artifact/patchprocess/testrun_hadoop-yarn-server-nodemanager.txt
 |
| Test Results | 
https://builds.apache.org/job/PreCommit-YARN-Build/8349/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf907.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/8349/console |


This message was automatically generated.

> Several NPEs when deleting local files on NM recovery
> -----------------------------------------------------
>
>                 Key: YARN-3793
>                 URL: https://issues.apache.org/jira/browse/YARN-3793
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: nodemanager
>    Affects Versions: 2.6.0
>            Reporter: Karthik Kambatla
>            Assignee: Varun Saxena
>            Priority: Critical
>         Attachments: YARN-3793.01.patch
>
>
> When NM work-preserving restart is enabled, we see several NPEs on recovery. 
> These seem to correspond to sub-directories that need to be deleted. I wonder 
> if null pointers here mean incorrect tracking of these resources and a 
> potential leak. This JIRA is to investigate and fix anything required.
> Logs show:
> {noformat}
> 2015-05-18 07:06:10,225 INFO 
> org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor: Deleting 
> absolute path : null
> 2015-05-18 07:06:10,224 ERROR 
> org.apache.hadoop.yarn.server.nodemanager.DeletionService: Exception during 
> execution of task in DeletionService
> java.lang.NullPointerException
>         at 
> org.apache.hadoop.fs.FileContext.fixRelativePart(FileContext.java:274)
>         at org.apache.hadoop.fs.FileContext.delete(FileContext.java:755)
>         at 
> org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor.deleteAsUser(DefaultContainerExecutor.java:458)
>         at 
> org.apache.hadoop.yarn.server.nodemanager.DeletionService$FileDeletionTask.run(DeletionService.java:293)
> {noformat}



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