I have to use cygwin on windows for my hadoop env. I get this problem running this sample mapred command:
bin/hadoop jar hadoop-examples-1.1.1.jar grep input output 'dfs[a-z.]+'
Failed to set permissions of path: \tmp\hadoop-cyg_server\mapred\local\taskTracker\cyg_server to 0700
I have this entry in my hdfs.site:
and I still am getting the error.
I also applied a patch that was supposed to fix this problem, and refered to it in my core-site,xml like this:
<description>Enables patch for issue HADOOP-7682 on Windows</description>
but the error persists.