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From "David Ciemiewicz (JIRA)" <j...@apache.org>
Subject [jira] Commented: (PIG-625) Add global -explain, -illustrate, -describe mode to PIG
Date Thu, 07 May 2009 17:05:30 GMT

    [ https://issues.apache.org/jira/browse/PIG-625?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12706998#action_12706998
] 

David Ciemiewicz commented on PIG-625:
--------------------------------------

I was just about to file a request similar to this and have been threatening to do so for
quite some time.

I live and die by littering my Pig scripts with DESCRIBE statements.  One of the most common
wastes of my time is finding out I have a typo in the alias name in DESCRIBE statements as
I do code refactoring and copy and paste coding between scripts.

If I simply had the ability to add -describe on my command lines, that would make my life
so much easier.  And it would make my pig scripts so much cleaner because they wouldn't have
the DESCRIBE litter.


> Add global -explain, -illustrate, -describe mode to PIG
> -------------------------------------------------------
>
>                 Key: PIG-625
>                 URL: https://issues.apache.org/jira/browse/PIG-625
>             Project: Pig
>          Issue Type: New Feature
>            Reporter: Yiping Han
>
> Currently PIG has the command EXPLAIN, ILLUSTRATE and DESCRIBE. But user need to manually
add/remove these lines in the script when they want to debug or see details of the job. I
think there should be a wait to enable these globally. 
> What I suggest is, to add -explain, -illustrate, -describe options to PIG command line.
When either of these are presented, all the DUMP and STORE commands in the script are converted
into EXPLAIN, ILLUSTRATE, DESCRIBE correspondingly. This makes debugging easier.

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