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From "Chris Nauroth (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-10903) Enhance hadoop classpath command to expand wildcards or write classpath into jar manifest.
Date Sat, 02 Aug 2014 03:34:38 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-10903?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14083324#comment-14083324
] 

Chris Nauroth commented on HADOOP-10903:
----------------------------------------

bq. I am probably missing something obvious, who performs the globbing if '-glob' is specified?

java does this for us behind the scenes.  When we do {{System.getProperty("java.class.path")}},
java has already expanded all of the wildcards in the input class path.  This property already
contains the "real" classpath with the path to every individual jar or directory, so we don't
need to glob explicitly.

> Enhance hadoop classpath command to expand wildcards or write classpath into jar manifest.
> ------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-10903
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10903
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: scripts, util
>            Reporter: Chris Nauroth
>            Assignee: Chris Nauroth
>         Attachments: HADOOP-10903.1.patch
>
>
> The "hadoop classpath" shell command currently prints the classpath variable established
by the shell scripts and then exits.  A few enhancements to this command would be desirable
to support a few other use cases.



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