[ http://issues.apache.org/jira/browse/HADOOP-125?page=all ]
Doug Cutting resolved HADOOP-125:
---------------------------------
Fix Version: 0.1.1
0.2
Resolution: Fixed
Assign To: Doug Cutting
I just fixed this.
> LocalFileSystem.makeAbsolute bug on Windows
> -------------------------------------------
>
> Key: HADOOP-125
> URL: http://issues.apache.org/jira/browse/HADOOP-125
> Project: Hadoop
> Type: Bug
> Components: fs
> Environment: Windows
> Reporter: paul sutter
> Assignee: Doug Cutting
> Priority: Minor
> Fix For: 0.1.1, 0.2
>
> LocalFileSystem.makeAbsolute() has a bug when running on Windows (which is
> very useful for the development phase of a Hadoop task on one's laptop).
> Problem: if a pathname such as /tmp/hadoop... is given in a config file,
> when the jobconf file is created, it is put into the relative directory
> named: currentdir/tmp/hadoop..., but when hadoop tries to open the file, it
> looks in c:/tmp/hadoop..., and the job fails.
> Cause: while Unix has two kinds of filespecs (relative and absolute), WIndows
> actually has three:
> (1) relative to current directory (subdir/file)
> (2) relative to current disk (/dir/subdir/file)
> (3) absolute (c:/dir/subdir/file)
> So when a config file specifies a directory with what-is-on-unix an absolute
> path (/tmp/hadoop...), the makeAbsolute() method will not work correctly.
> Basically, File.isAbsolute() will return false for cases (1) and (2) above,
> but true for case (3), which is not expected by the code below.
> The solution would be to code explicit detection of all three casses for
> Windows in the code below from LocalFileSystem:
> private File makeAbsolute(File f) {
> if (f.isAbsolute()) {
> return f;
> } else {
> return new File(workingDir, f.toString());
> }
> }
> Im happy to explain if this explanation is confusing...
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