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From "Russell Jurney (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PIG-2927) SHIP and use JRuby gems in JRuby UDFs
Date Tue, 25 Sep 2012 03:04:07 GMT

    [ https://issues.apache.org/jira/browse/PIG-2927?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13462392#comment-13462392
] 

Russell Jurney commented on PIG-2927:
-------------------------------------

Moving from email.

http://stackoverflow.com/a/10083594/13969 shows you the installed path of a given gem.

jruby -S gem install mail
jirb
require 'rubygems'
spec = Gem::Specification.find_by_name("mail")
spec.gem_dir

But really... we can just use Bundler right? Its perfect - it expects a user to create their
own gem environment. http://gembundler.com/ Then there is a list of gems in a jruby file,
and we can go through that list and get the installed location in our bundler environment
(which is likely to be in a subdirectory).
                
> SHIP and use JRuby gems in JRuby UDFs
> -------------------------------------
>
>                 Key: PIG-2927
>                 URL: https://issues.apache.org/jira/browse/PIG-2927
>             Project: Pig
>          Issue Type: New Feature
>            Reporter: Russell Jurney
>            Priority: Minor
>
> It would be great to use JRuby gems in JRuby UDFs without installing them on all machines
on the cluster. Some way to SHIP them automatically with the job would be great.

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