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https://issues.apache.org/jira/browse/HADOOP-7682?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13440120#comment-13440120
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Joshua Caplan commented on HADOOP-7682:
---------------------------------------
May I suggest a simple workaround for Windows users struggling with this new
impediment.
create a WinLocalFileSystem class (subclass of LocalFileSystem) which ignores
IOExceptions on setPermissions() or, if you're feeling ambitious, does
something more appropriate when trying to set them. You will also need to
override mkdirs( Path, FsPermission ) to delegate to mkdirs( Path ) and call
this.setPermission.
Register this class as the implementation of the "file" schema, using the
property definition
fs.file.impl=com.package.name.WinLocalFileSystem
That got me past it for local testing.
> taskTracker could not start because "Failed to set permissions" to "ttprivate
> to 0700"
> --------------------------------------------------------------------------------------
>
> Key: HADOOP-7682
> URL: https://issues.apache.org/jira/browse/HADOOP-7682
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs
> Affects Versions: 1.0.1
> Environment: OS:WindowsXP SP3 , Filesystem :NTFS, cygwin 1.7.9-1,
> jdk1.6.0_05
> Reporter: Magic Xie
>
> ERROR org.apache.hadoop.mapred.TaskTracker:Can not start task tracker because
> java.io.IOException:Failed to set permissions of
> path:/tmp/hadoop-cyg_server/mapred/local/ttprivate to 0700
> at
> org.apache.hadoop.fs.RawLocalFileSystem.checkReturnValue(RawLocalFileSystem.java:525)
> at
> org.apache.hadoop.fs.RawLocalFileSystem.setPermission(RawLocalFileSystem.java:499)
> at
> org.apache.hadoop.fs.RawLocalFileSystem.mkdirs(RawLocalFileSystem.java:318)
> at org.apache.hadoop.fs.FilterFileSystem.mkdirs(FilterFileSystem.java:183)
> at org.apache.hadoop.mapred.TaskTracker.initialize(TaskTracker.java:635)
> at org.apache.hadoop.mapred.TaskTracker.(TaskTracker.java:1328)
> at org.apache.hadoop.mapred.TaskTracker.main(TaskTracker.java:3430)
> Since hadoop0.20.203 when the TaskTracker initialize, it checks the
> permission(TaskTracker Line 624) of
> (org.apache.hadoop.mapred.TaskTracker.TT_LOG_TMP_DIR,org.apache.hadoop.mapred.TaskTracker.TT_PRIVATE_DIR,
>
> org.apache.hadoop.mapred.TaskTracker.TT_PRIVATE_DIR).RawLocalFileSystem(http://svn.apache.org/viewvc/hadoop/common/tags/release-0.20.203.0/src/core/org/apache/hadoop/fs/RawLocalFileSystem.java?view=markup)
> call setPermission(Line 481) to deal with it, setPermission works fine on
> *nx, however,it dose not alway works on windows.
> setPermission call setReadable of Java.io.File in the line 498, but according
> to the Table1 below provided by oracle,setReadable(false) will always return
> false on windows, the same as setExecutable(false).
> http://java.sun.com/developer/technicalArticles/J2SE/Desktop/javase6/enhancements/
> is it cause the task tracker "Failed to set permissions" to "ttprivate to
> 0700"?
> Hadoop 0.20.202 works fine in the same environment.
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