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From "Olga Natkovich (JIRA)" <j...@apache.org>
Subject [jira] Commented: (PIG-574) run command for grunt
Date Tue, 10 Feb 2009 22:07:59 GMT

    [ https://issues.apache.org/jira/browse/PIG-574?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12672425#action_12672425
] 

Olga Natkovich commented on PIG-574:
------------------------------------

I reviewed the patch and it looks good. I also ran unit tests and they all passed.

In addition, I ran some manual tests and have a couple of comments:

(1) As implemented now, scripts that ran from within grunt would not be able to take advantage
of the parameter substitution as it is not available in the interactive mode. I think this
is ok for now and we can revisit it later if users ask for it.
(2) When using run, I could integrate commands in my script with the interactive commands
in the shell which was really nice; however, the commands from the script did not show in
the command history. If it is reasonably easy to integrate, it would be nice to have that
functionality.
(3) Very minor thing: after I execute ran command, I see double prompt from grant:

grunt> grunt>



> run command for grunt
> ---------------------
>
>                 Key: PIG-574
>                 URL: https://issues.apache.org/jira/browse/PIG-574
>             Project: Pig
>          Issue Type: New Feature
>          Components: grunt
>            Reporter: David Ciemiewicz
>            Priority: Minor
>         Attachments: run_command.patch
>
>
> This is a request for a "run file" command in grunt which will read a script from the
local file system and execute the script interactively while in the grunt shell.
> One of the things that slows down iterative development of large, complicated Pig scripts
that must operate on hadoop fs data is that the edit, run, debug cycle is slow because I must
wait to allocate a Hadoop-on-Demand (hod) cluster for each iteration.  I would prefer not
to preallocate a cluster of nodes (though I could).
> Instead, I'd like to have one window open and edit my Pig script using vim or emacs,
write it, and then type "run myscript.pig" at the grunt shell until I get things right.
> I'm used to doing similar things with Oracle, MySQL, and R. 

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