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From "John Zhuge (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-7352) FileSystem#listStatus should throw IOE upon access error
Date Wed, 19 Oct 2016 01:54:58 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7352?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15587369#comment-15587369
] 

John Zhuge commented on HADOOP-7352:
------------------------------------

Thanks [~xiaochen] for the review and commit! Thanks [~stevel@apache.org] for the review and
many others for the discussions.

> FileSystem#listStatus should throw IOE upon access error
> --------------------------------------------------------
>
>                 Key: HADOOP-7352
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7352
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: fs
>    Affects Versions: 2.6.0
>            Reporter: Matt Foley
>            Assignee: John Zhuge
>             Fix For: 3.0.0-alpha2
>
>         Attachments: HADOOP-7352.001.patch, HADOOP-7352.002.patch, HADOOP-7352.003.patch,
HADOOP-7352.004.patch, HADOOP-7352.005.patch
>
>
> In HADOOP-6201 and HDFS-538 it was agreed that FileSystem::listStatus should throw FileNotFoundException
instead of returning null, when the target directory did not exist.
> However, in LocalFileSystem implementation today, FileSystem::listStatus still may return
null, when the target directory exists but does not grant read permission.  This causes NPE
in many callers, for all the reasons cited in HADOOP-6201 and HDFS-538.  See HADOOP-7327 and
its linked issues for examples.



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