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From "Brook Zhou (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5472) WIN_MAX_PATH logic is off by one
Date Tue, 09 Aug 2016 00:06:20 GMT

    [ https://issues.apache.org/jira/browse/YARN-5472?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15412694#comment-15412694
] 

Brook Zhou commented on YARN-5472:
----------------------------------

Yes, this is something I have verified on our NM's running on machine versions up to server
2012 r2 - the max path limitation without using long-path prefixing is 259 characters.

> WIN_MAX_PATH logic is off by one
> --------------------------------
>
>                 Key: YARN-5472
>                 URL: https://issues.apache.org/jira/browse/YARN-5472
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: nodemanager
>    Affects Versions: 2.6.0
>         Environment: Windows
>            Reporter: Brook Zhou
>            Assignee: Brook Zhou
>            Priority: Minor
>         Attachments: YARN-5472-v0.patch
>
>
> The following check is incorrect in DefaultContainerExecutor:
>     if (Shell.WINDOWS && sb.getWrapperScriptPath().toString().length() > 
   WIN_MAX_PATH)
> should be >=, as the max path is defined as "D:\some 256-character path string<NUL>"
on Windows platforms.



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