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From "Thejas M Nair (JIRA)" <j...@apache.org>
Subject [jira] Commented: (PIG-1485) Need a means to register jars in PigLatin scripts without using the "register" keyword.
Date Wed, 07 Jul 2010 22:03:50 GMT

    [ https://issues.apache.org/jira/browse/PIG-1485?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12886107#action_12886107
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Thejas M Nair commented on PIG-1485:
------------------------------------

You can specify the jars you want to register using the property pig.addtional.jars on commandline
- 
See example in - http://hadoop.apache.org/pig/docs/r0.7.0/piglatin_ref2.html#REGISTER

This feature was introduced in v 0.7 (PIG-1226.)


> Need a means to register jars in PigLatin scripts without using the "register" keyword.
> ---------------------------------------------------------------------------------------
>
>                 Key: PIG-1485
>                 URL: https://issues.apache.org/jira/browse/PIG-1485
>             Project: Pig
>          Issue Type: New Feature
>            Reporter: Sameer M
>
> Hi
> Currently to instruct Pig to add a jar to its classpath and also make it available to
the map/reduce jobs, we have use the "register" keyword with path to a jar.
> This problem with this approach is that it hardcodes the pig latin script to a specific
jar version thus making the pig latin script forward incompatible to any version upgrades
to that jar.
> I can see the value for this keyword in an interactive session i.e. when using the Grunt
shell however feels like this is an incorrect thing to do in PigLatin script files.
> Would be great if there was an alternative method to expose a jar to Pig such as using
the classpath. 
> This would help scripts do away with the need to embed registers in them and make them
agnostic to jar file names.
> The benefit of using the classpath is that there are lots of hooks to configure it from
different environments e.g. $CLASSPATH when invoked from shell, testing frameworks like maven
and junit can also inject stuff into classpath and so can frameworks like Oozie.
> Thanks
> Sameer

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