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https://issues.apache.org/jira/browse/HADOOP-7352?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15477169#comment-15477169
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John Zhuge edited comment on HADOOP-7352 at 9/9/16 2:32 PM:
------------------------------------------------------------
You are right.
Patch 003 ensures {{listStatus}}, {{globStatus}}, and {{expandAsGlob}} to throw
IOE upon access error. However, it is just 1 of the 3 possible choices:
* All throw IOE
* {{listStatus}} throws IOE, {{globStatus}}, and {{expandAsGlob}} return empty
array
* All 3 return empty array
was (Author: jzhuge):
Yes.
Patch 003 ensures {{listStatus}}, {{globStatus}}, and {{expandAsGlob}} to throw
IOE upon access error. However, it is just 1 of the 3 possible choices:
* All throw IOE
* {{listStatus}} throws IOE, {{globStatus}}, and {{expandAsGlob}} return empty
array
* All 3 return empty array
> 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
> Attachments: HADOOP-7352.001.patch, HADOOP-7352.002.patch,
> HADOOP-7352.003.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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