Ivan A. Veselovsky created HADOOP-9337:
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             Summary: org.apache.hadoop.fs.DF.getMount() does not work on Mac OS
                 Key: HADOOP-9337
                 URL: https://issues.apache.org/jira/browse/HADOOP-9337
             Project: Hadoop Common
          Issue Type: Bug
         Environment: Mac OS 10.8
            Reporter: Ivan A. Veselovsky
            Assignee: Ivan A. Veselovsky


test org.apache.hadoop.fs.TestLocalFileSystem.testReportChecksumFailure() 
(added in HADOOP-9067) appears to fail on MacOS because 
method org.apache.hadoop.fs.DF.getMount() does not work correctly.
The problem is that "df -k <path>" command returns on MacOS output like the 
following:
-------
Filesystem   1024-blocks      Used Available Capacity  iused    ifree %iused  
Mounted on
/dev/disk0s4   194879828 100327120  94552708    52% 25081778 23638177   51%   
/Volumes/Data
-------
while the following is expected:
-------
Filesystem         1024-blocks      Used Available Capacity Mounted on
/dev/mapper/vg_iveselovskyws-lv_home 420545160  15978372 383204308       5% 
/home
-------
So, we see that Mac's output has 3 additional tokens.

I can suggest 2 ways to fix the problem.
(a) use "-P" (POSIX) option when invoking df command. This will probably ensure 
unifirm output on all Unix systems;
(b) move Mac branch to specific "case" branch and treat it specifically (like 
we currently have for AIX, DF.java, line 214)

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