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From "Olga Natkovich (JIRA)" <j...@apache.org>
Subject [jira] Updated: (PIG-625) Add global -explain, -illustrate, -describe mode to PIG
Date Wed, 02 Mar 2011 20:56:37 GMT

     [ https://issues.apache.org/jira/browse/PIG-625?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Olga Natkovich updated PIG-625:
-------------------------------

    Fix Version/s:     (was: 0.9.0)

explain and illustrate already do what you want - they allow to explain/illustrate the entire
script. (Doing this on individual aliases for the entire script does not make sense because
it would not correspond to the real execution anyways.

So you can already do this:

pig -e "explain -script myscript.pig" (all versions)
pig -e "illustrate -script myscript" (0.9)

We need clarification for describe: which aliases would you want to be described? All? only
the ones that are stored?

> 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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