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From "Hairong Kuang (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-6890) Improve listFiles API introduced by HADOOP-6870
Date Mon, 02 Aug 2010 17:26:21 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-6890?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Hairong Kuang updated HADOOP-6890:
----------------------------------

    Attachment: improveListFiles.patch

> Improve listFiles API introduced by HADOOP-6870
> -----------------------------------------------
>
>                 Key: HADOOP-6890
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6890
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: fs
>    Affects Versions: 0.22.0
>            Reporter: Hairong Kuang
>            Assignee: Hairong Kuang
>             Fix For: 0.22.0
>
>         Attachments: improveListFiles.patch, listFilesInFS.patch
>
>
> This jira is mainly for addressing Suresh's review comments for HADOOP-6870:
>    1. General comment: I have concerns about recursive listing. This could be abused
by the applications, creating a lot of requests into HDFS.
>    2. Any deletion of files/directories while reursing through directories results in
RuntimeException and application has a partial result. Should we ignore if a directory was
in stack and was not found later when iterating through it?
>    3. FileSystem.java
>           * listFile() - method javadoc could be better organized - first write about
if path is directory and two cases recursive=true and false. Then if path is file and two
cases recursive=true or false.
>           * listFile() - document throwing RuntimeException, UnsupportedOperationException
and the possible cause. IOException is no longer thrown.
>    4. TestListFiles.java
>           * testDirectory() - comments test empty directory and test directory with 1
file should be moved up to relevant sections of the test.

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