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Posted to common-dev@hadoop.apache.org by "Tsz Wo (Nicholas), SZE (JIRA)" <ji...@apache.org> on 2007/10/03 23:57:51 UTC
[jira] Commented: (HADOOP-1961) -get, -copyToLocal fail when
single filename is passed
[ https://issues.apache.org/jira/browse/HADOOP-1961?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12532268 ]
Tsz Wo (Nicholas), SZE commented on HADOOP-1961:
------------------------------------------------
Raghu, your patch cannot be applied to the current trunk. Could you update it?
> -get, -copyToLocal fail when single filename is passed
> -------------------------------------------------------
>
> Key: HADOOP-1961
> URL: https://issues.apache.org/jira/browse/HADOOP-1961
> Project: Hadoop
> Issue Type: Bug
> Components: dfs
> Affects Versions: 0.14.1
> Reporter: Koji Noguchi
> Assignee: Raghu Angadi
> Priority: Blocker
> Fix For: 0.14.2
>
> Attachments: HADOOP-1961.patch, HADOOP-1961.patch
>
>
> In 0.14.1 and in trunk, when I try
> % hadoop dfs -get /user/knoguchi/aaa aaa
> get: Failed to rename tmp file to local destination "aaa". Remote source file "/user/knoguchi/aaa" is saved to "/tmp/_copyToLocal_aaa30478".
> This works.
> % hadoop dfs -get /user/knoguchi/aaa ./aaa
> or
> % hadoop dfs -get /user/knoguchi/aaa /home/knoguchi/aaa
> My guess. With change in HADOOP-1292, it now creates a tmp file when -copyToLocal.
> When destination path is passed without any directory, tmp file is created under '/tmp'. Otherwise, it uses the same directory as the destination path.
> In Java API for File.renameTo,
> http://java.sun.com/javase/6/docs/api/java/io/File.html#renameTo(java.io.File)
> it says
> " The rename operation might not be able to move a file from one filesystem to another",
> so renameTo call from /tmp/_tmpfile to /home/knoguchi can fail.
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