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From "Mitesh Singh Jat (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-2685) hadoop fs -ls globbing gives inconsistent exit code
Date Thu, 15 Dec 2011 06:43:30 GMT
hadoop fs -ls globbing gives inconsistent exit code
---------------------------------------------------

                 Key: HDFS-2685
                 URL: https://issues.apache.org/jira/browse/HDFS-2685
             Project: Hadoop HDFS
          Issue Type: Bug
    Affects Versions: 0.20.205.0, 0.20.204.0, 0.20.2
            Reporter: Mitesh Singh Jat


_hadoop fs -ls_ command gives exit code for globbed input path, which is the exit code for
the last resolved absolute path. Whereas _ls_ command always give same exit code regardless
of position of non-existent path in globbing.

{code:bash}$ hadoop fs -mkdir input/20110{1,2,3}/{A,B,C,D}/{1,2} {code}

Since directory 'input/201104/' is not present, the following command gives 255 as exit code.
{code:bash}$ hadoop fs -ls input/20110{1,2,3,4}/ ; echo $? {code}
{noformat}
Found 4 items
drwxr-xr-x   - mitesh supergroup          0 2011-12-15 11:51 /user/mitesh/input/201101/A
drwxr-xr-x   - mitesh supergroup          0 2011-12-15 11:51 /user/mitesh/input/201101/B
drwxr-xr-x   - mitesh supergroup          0 2011-12-15 11:51 /user/mitesh/input/201101/C
drwxr-xr-x   - mitesh supergroup          0 2011-12-15 11:51 /user/mitesh/input/201101/D
Found 4 items
drwxr-xr-x   - mitesh supergroup          0 2011-12-15 11:51 /user/mitesh/input/201102/A
drwxr-xr-x   - mitesh supergroup          0 2011-12-15 11:51 /user/mitesh/input/201102/B
drwxr-xr-x   - mitesh supergroup          0 2011-12-15 11:51 /user/mitesh/input/201102/C
drwxr-xr-x   - mitesh supergroup          0 2011-12-15 11:51 /user/mitesh/input/201102/D
Found 4 items
drwxr-xr-x   - mitesh supergroup          0 2011-12-15 11:51 /user/mitesh/input/201103/A
drwxr-xr-x   - mitesh supergroup          0 2011-12-15 11:51 /user/mitesh/input/201103/B
drwxr-xr-x   - mitesh supergroup          0 2011-12-15 11:51 /user/mitesh/input/201103/C
drwxr-xr-x   - mitesh supergroup          0 2011-12-15 11:51 /user/mitesh/input/201103/D
ls: Cannot access input/201104/: No such file or directory.
{noformat}
{color:red}255{color}


The directory 'input/201104/' is not present but given as second last parameter in globbing.
The following command gives 0 as exit code, because directory 'input/201103/' is present.
{code:bash}$ hadoop fs -ls input/20110{1,2,4,3}/ ; echo $? {code}
{noformat}
Found 4 items
drwxr-xr-x   - mitesh supergroup          0 2011-12-15 11:51 /user/mitesh/input/201101/A
drwxr-xr-x   - mitesh supergroup          0 2011-12-15 11:51 /user/mitesh/input/201101/B
drwxr-xr-x   - mitesh supergroup          0 2011-12-15 11:51 /user/mitesh/input/201101/C
drwxr-xr-x   - mitesh supergroup          0 2011-12-15 11:51 /user/mitesh/input/201101/D
Found 4 items
drwxr-xr-x   - mitesh supergroup          0 2011-12-15 11:51 /user/mitesh/input/201102/A
drwxr-xr-x   - mitesh supergroup          0 2011-12-15 11:51 /user/mitesh/input/201102/B
drwxr-xr-x   - mitesh supergroup          0 2011-12-15 11:51 /user/mitesh/input/201102/C
drwxr-xr-x   - mitesh supergroup          0 2011-12-15 11:51 /user/mitesh/input/201102/D
ls: Cannot access input/201104/: No such file or directory.
Found 4 items
drwxr-xr-x   - mitesh supergroup          0 2011-12-15 11:51 /user/mitesh/input/201103/A
drwxr-xr-x   - mitesh supergroup          0 2011-12-15 11:51 /user/mitesh/input/201103/B
drwxr-xr-x   - mitesh supergroup          0 2011-12-15 11:51 /user/mitesh/input/201103/C
drwxr-xr-x   - mitesh supergroup          0 2011-12-15 11:51 /user/mitesh/input/201103/D
{noformat}
{color:green}0{color}


Whereas, on Linux, ls command gives non-zero(2) as exit code, irrespective of position of
non-existent path in globbing.
{code:bash}$ mkdir -p input/20110{1,2,3,4}/{A,B,C,D}/{1,2} {code}


{code:bash}$ ls input/20110{1,2,4,3}/ ; echo $? {code}
{noformat}
/bin/ls: input/201104/: No such file or directory
input/201101/:
./  ../  A/  B/  C/  D/

input/201102/:
./  ../  A/  B/  C/  D/

input/201103/:
./  ../  A/  B/  C/  D/
{noformat}
{color:red}2{color}


{code:bash}$ ls input/20110{1,2,3,4}/ ; echo $? {code}
{noformat}
/bin/ls: input/201104/: No such file or directory
input/201101/:
./  ../  A/  B/  C/  D/

input/201102/:
./  ../  A/  B/  C/  D/

input/201103/:
./  ../  A/  B/  C/  D/
{noformat}
{color:red}2{color}

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