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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-9193) hadoop script can inadvertently expand wildcard arguments when delegating to hdfs script
Date Sat, 02 Feb 2013 12:42:22 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-9193?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13569525#comment-13569525
] 

Hudson commented on HADOOP-9193:
--------------------------------

Integrated in Hadoop-Hdfs-0.23-Build #513 (See [https://builds.apache.org/job/Hadoop-Hdfs-0.23-Build/513/])
    HADOOP-9193. hadoop script can inadvertently expand wildcard arguments when delegating
to hdfs script. (Andy Isaacson via tgraves) (Revision 1441499)

     Result = SUCCESS
tgraves : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1441499
Files : 
* /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/CHANGES.txt
* /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/bin/hadoop

                
> hadoop script can inadvertently expand wildcard arguments when delegating to hdfs script
> ----------------------------------------------------------------------------------------
>
>                 Key: HADOOP-9193
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9193
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: scripts
>    Affects Versions: 2.0.2-alpha, 0.23.5
>            Reporter: Jason Lowe
>            Assignee: Andy Isaacson
>            Priority: Minor
>             Fix For: 3.0.0, 2.0.3-alpha, 0.23.7
>
>         Attachments: hadoop9193.diff
>
>
> The hadoop front-end script will print a deprecation warning and defer to the hdfs front-end
script for certain commands, like fsck, dfs.  If a wildcard appears as an argument then it
can be inadvertently expanded by the shell to match a local filesystem path before being sent
to the hdfs script, which can be very confusing to the end user.
> For example, the following two commands usually perform very different things, even though
they should be equivalent:
> {code}
> hadoop fs -ls /tmp/\*
> hadoop dfs -ls /tmp/\*
> {code}
> The former lists everything in the default filesystem under /tmp, while the latter expands
/tmp/\* into everything in the *local* filesystem under /tmp and passes those as arguments
to try to list in the default filesystem.

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