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https://issues.apache.org/jira/browse/HADOOP-7352?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15475009#comment-15475009
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John Zhuge edited comment on HADOOP-7352 at 9/8/16 9:25 PM:
------------------------------------------------------------
Globber has its own version of {{listStatus}} which converts IOE to empty array:
{code}
private FileStatus[] listStatus(Path path) throws IOException {
try {
if (fs != null) {
return fs.listStatus(path);
} else {
return fc.util().listStatus(path);
}
} catch (FileNotFoundException e) {
return new FileStatus[0];
}
}
{code}
was (Author: jzhuge):
Globber has its own version of {{listStatus}} which converts IOE to empty array:
{code}
private FileStatus[] listStatus(Path path) throws IOException {
try {
if (fs != null) {
return fs.listStatus(path);
} else {
return fc.util().listStatus(path);
}
} catch (IOException e) {
return new FileStatus[0];
}
}
{code}
> 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
>
>
> 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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