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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-7322) Adding a util method in FileUtil for directory listing
Date Thu, 26 May 2011 12:38:48 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7322?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13039683#comment-13039683
] 

Hudson commented on HADOOP-7322:
--------------------------------

Integrated in Hadoop-Common-trunk #700 (See [https://builds.apache.org/hudson/job/Hadoop-Common-trunk/700/])
    HADOOP-7322. Adding a util method in FileUtil for directory listing, avoid NPEs on File.listFiles().
Contributed by Bharath Mundlapudi.

mattf : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1127697
Files : 
* /hadoop/common/trunk/CHANGES.txt
* /hadoop/common/trunk/src/java/org/apache/hadoop/fs/RawLocalFileSystem.java
* /hadoop/common/trunk/src/java/org/apache/hadoop/fs/FileUtil.java
* /hadoop/common/trunk/src/test/core/org/apache/hadoop/fs/TestFileUtil.java


> Adding a util method in FileUtil for directory listing
> ------------------------------------------------------
>
>                 Key: HADOOP-7322
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7322
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Bharath Mundlapudi
>            Assignee: Bharath Mundlapudi
>            Priority: Minor
>             Fix For: 0.23.0
>
>         Attachments: HADOOP-7322-1.patch, HADOOP-7322-2.patch, HADOOP-7322-3.patch
>
>
> While testing Disk Fail Inplace, we encountered lots of NPE from Dir.listFiles API. This
API can return null when Dir is not directory or disk is bad. I am proposing to have a File
Util which can be used consistently across to deal with disk issues. This util api will do
the following:
> 1. When error happens it will throw IOException
> 2. Else it will return empty list or list of files.
> Signature:
> File[] FileUtil.listFiles(File dir) throws IOException {}
> This way we no need to write wrapper code every where. Also, API is consistent with the
signature.
>  

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