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https://issues.apache.org/jira/browse/HADOOP-12009?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14608197#comment-14608197
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J.Andreina commented on HADOOP-12009:
-------------------------------------
I'll update the patch soon along with the testcase in hadoop-common project.
> Clarify FileSystem.listStatus() sorting order & fix
> FileSystemContractBaseTest:testListStatus
> ----------------------------------------------------------------------------------------------
>
> Key: HADOOP-12009
> URL: https://issues.apache.org/jira/browse/HADOOP-12009
> Project: Hadoop Common
> Issue Type: Improvement
> Components: test
> Reporter: Jakob Homan
> Assignee: J.Andreina
> Priority: Minor
> Fix For: 2.8.0
>
> Attachments: HADOOP-12009-003.patch, HADOOP-12009.1.patch
>
>
> FileSystem.listStatus does not guarantee that implementations will return
> sorted entries:
> {code} /**
> * List the statuses of the files/directories in the given path if the path
> is
> * a directory.
> *
> * @param f given path
> * @return the statuses of the files/directories in the given patch
> * @throws FileNotFoundException when the path does not exist;
> * IOException see specific implementation
> */
> public abstract FileStatus[] listStatus(Path f) throws
> FileNotFoundException,
> IOException;{code}
> However, FileSystemContractBaseTest, expects the elements to come back sorted:
> {code} Path[] testDirs = { path("/test/hadoop/a"),
> path("/test/hadoop/b"),
> path("/test/hadoop/c/1"), };
>
> // ...
> paths = fs.listStatus(path("/test/hadoop"));
> assertEquals(3, paths.length);
> assertEquals(path("/test/hadoop/a"), paths[0].getPath());
> assertEquals(path("/test/hadoop/b"), paths[1].getPath());
> assertEquals(path("/test/hadoop/c"), paths[2].getPath());{code}
> We should pass this test as long as all the paths are there, regardless of
> their ordering.
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