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Posted to common-dev@hadoop.apache.org by "Andrew Wang (JIRA)" <ji...@apache.org> on 2013/09/25 22:38:07 UTC
[jira] [Resolved] (HADOOP-9761) ViewFileSystem#rename fails when
using DistributedFileSystem
[ https://issues.apache.org/jira/browse/HADOOP-9761?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Andrew Wang resolved HADOOP-9761.
---------------------------------
Resolution: Fixed
Fix Version/s: (was: 2.3.0)
2.1.2-beta
Committed to branch-2.1 and updated the CHANGES.txt in other branch-2 and trunk.
> ViewFileSystem#rename fails when using DistributedFileSystem
> ------------------------------------------------------------
>
> Key: HADOOP-9761
> URL: https://issues.apache.org/jira/browse/HADOOP-9761
> Project: Hadoop Common
> Issue Type: Bug
> Components: viewfs
> Affects Versions: 3.0.0, 2.1.0-beta
> Reporter: Andrew Wang
> Assignee: Andrew Wang
> Priority: Blocker
> Fix For: 2.1.2-beta
>
> Attachments: 0001-HADOOP-9761.004.patch, hadoop-9761-1.patch, hadoop-9761-1.patch, hadoop-9761-2.patch
>
>
> ViewFileSystem currently passes unqualified paths (no scheme or authority) to underlying FileSystems when doing a rename. DistributedFileSystem symlink support added in HADOOP-9418 needs to qualify and check rename sources and destinations since cross-filesystem renames aren't supported, so this breaks in the following way
> - Default FS URI is configured to viewfs://<viewfs>
> - When doing a rename, ViewFileSystem checks to make sure both src and dst FileSystems are the same (which they are, both in same DFS), and then calls DistributedFileSystem#rename with unqualified "remainder" paths
> - Since these paths are unqualified, DFS qualifies them with the default FS to check that it can do the rename. This turns it into viewfs://<viewfs>/<path>
> - Since viewfs://<viewfs> is not the DFS's URI, DFS errors out the rename.
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