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https://issues.apache.org/jira/browse/HDFS-538?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Chansler updated HDFS-538:
---------------------------------
Release Note: (was: Updated DistributedFileSystem::listStatus() method to
throw a FileNotFoundException rather than return null in the case that the
provided path does not exist. Updated code that relied on checking for null to
catch FileNotFoundException. Client code that relied on checking for null
should be updated to support the new semantics.)
Editorial pass over all release notes prior to publication of 0.21.
> DistributedFileSystem::listStatus incorrectly returns null for empty result
> sets
> --------------------------------------------------------------------------------
>
> Key: HDFS-538
> URL: https://issues.apache.org/jira/browse/HDFS-538
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Jakob Homan
> Assignee: Jakob Homan
> Fix For: 0.21.0
>
> Attachments: HDFS-538.patch
>
>
> Currently the listStatus method returns null if no files match the request.
> This differs from the Checksum/LocalFileSystem implementation, which returns
> an empty array, and the nontvery-explict prescription of the FileSystem
> interface: "{...@return the statuses of the files/directories in the given
> patch}}" It's better to return an empty collection than have to add extra
> null checks. The method should return an empty array.
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