[jira] [Commented] (PIG-3367) Add assert keyword (operator) in pig

["Alex Levenson (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/PIG-3367?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13694447#comment-13694447 ] 

Alex Levenson commented on PIG-3367:
------------------------------------

It might even be nice to require a message
                
> Add assert keyword (operator) in pig
> ------------------------------------
>
>                 Key: PIG-3367
>                 URL: https://issues.apache.org/jira/browse/PIG-3367
>             Project: Pig
>          Issue Type: New Feature
>          Components: parser
>            Reporter: Aniket Mokashi
>
> Assert operator can be used for data validation. With assert you can write script as following-
> {code}
> a = load 'something' as (a0:int, a1:int);
> assert a by a0 > 0;
> {code}
> This script will fail if assert is violated.

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