hadoop-common-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Chris Nauroth (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-9507) LocalFileSystem rename() is broken in some cases when destination exists
Date Thu, 25 Jul 2013 00:13:48 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-9507?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Chris Nauroth updated HADOOP-9507:
----------------------------------

    Attachment: HADOOP-9507-trunk.2.patch

I'm uploading version 2 of the trunk patch to fix the javac deprecation warning.  Here is
the incremental diff:

{code}
diff --git hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/RawLocalFileSystem.java
hadoop-common-projec
index 2ee6c70..6b45fe3 100644
--- hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/RawLocalFileSystem.java
+++ hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/RawLocalFileSystem.java
@@ -332,7 +332,7 @@ public boolean rename(Path src, Path dst) throws IOException {
     // fails.  Copy source content to destination and delete source.
     if (this.exists(dst)) {
       FileStatus sdst = this.getFileStatus(dst);
-      if (sdst.isDir() && dstFile.list().length == 0) {
+      if (sdst.isDirectory() && dstFile.list().length == 0) {
         if (LOG.isDebugEnabled()) {
           LOG.debug("Copying contents of " + src + " to " + dst);
         }
{code}

On branch-1, we don't have {{FileStatus#isDirectory}}, and {{FileStatus#isDir}} is not deprecated.
 Therefore, we don't need to update the branch-1 and branch-1-win patches.
                
> LocalFileSystem rename() is broken in some cases when destination exists
> ------------------------------------------------------------------------
>
>                 Key: HADOOP-9507
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9507
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs
>    Affects Versions: 3.0.0, 1-win, 2.1.0-beta, 1.3.0
>            Reporter: Mostafa Elhemali
>            Assignee: Chris Nauroth
>            Priority: Minor
>         Attachments: HADOOP-9507-branch-1.1.patch, HADOOP-9507-branch-1-win.1.patch,
HADOOP-9507.branch-1-win.patch, HADOOP-9507-trunk.1.patch, HADOOP-9507-trunk.2.patch
>
>
> The rename() method in RawLocalFileSystem uses FileUtil.copy() without realizing that
FileUtil.copy() has a special behavior that if you're copying /foo to /bar and /bar exists
and is a directory, it'll copy /foo inside /bar instead of overwriting it, which is not what
rename() wants. So you end up with weird behaviors like in this repro:
> {code}
> c:
> cd \
> md Foo
> md Bar
> md Foo\X
> md Bar\X
> hadoop fs -mv file:///c:/Foo file:///c:/Bar
> {code}
> At the end of this, you would expect to find only Bar\X, but you instead find Bar\X\X.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

Mime
View raw message