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From "Brahma Reddy Battula (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3793) Several NPEs when deleting local files on NM recovery
Date Thu, 11 Jun 2015 02:30:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-3793?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14581358#comment-14581358
] 

Brahma Reddy Battula commented on YARN-3793:
--------------------------------------------

[~kasha] thanks for reporting this jira.. It's dupe of HADOOP-11878...

> 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: Karthik Kambatla
>
> 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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