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https://issues.apache.org/jira/browse/HADOOP-8709?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13439875#comment-13439875
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Sanjay Radia commented on HADOOP-8709:
--------------------------------------
To summarize:
{code}
Below "nonExist" means that the component does not exist
| Hadoop 20, Hadoop 1 | Trunk, hadoop 2
--|-------------------------------------------------------
1 | /a/nonExist/c null | null
2 | /a/b/nonExist null | null
3 | /a/b/nonExist* empty | Empty
4 | /a/nonExist/c* empty | fnfException
5 | /a/nonExist*/c empty | empty
{code}
Note the the return of null for row 1 and 2 is apparently used by the shell
(see daryn's comment).
> globStatus changed behavior from 0.20/1.x
> -----------------------------------------
>
> Key: HADOOP-8709
> URL: https://issues.apache.org/jira/browse/HADOOP-8709
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs
> Affects Versions: 0.23.0, 2.0.0-alpha
> Reporter: Jason Lowe
> Assignee: Jason Lowe
> Priority: Critical
> Attachments: HADOOP-8709.patch, HADOOP-8709.patch
>
>
> In 0.20 or 1.x, globStatus will return an empty array if the glob pattern
> does not match any files. After HADOOP-6201 it throws FileNotFoundException.
> The javadoc states it will return an empty array.
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