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Posted to hdfs-dev@hadoop.apache.org by "Mitesh Singh Jat (Created) (JIRA)" <ji...@apache.org> on 2011/12/15 07:43:30 UTC
[jira] [Created] (HDFS-2685) hadoop fs -ls globbing gives
inconsistent exit code
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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