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From "Ashish Thusoo (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HIVE-680) add user constraints
Date Thu, 23 Jul 2009 21:21:14 GMT

    [ https://issues.apache.org/jira/browse/HIVE-680?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12734789#action_12734789
] 

Ashish Thusoo commented on HIVE-680:
------------------------------------

Actually constraint checking is usually done on inserting and loading rows.

Constraints on reading data are just views, no?

Any concrete example you have in mind.

> add user constraints 
> ---------------------
>
>                 Key: HIVE-680
>                 URL: https://issues.apache.org/jira/browse/HIVE-680
>             Project: Hadoop Hive
>          Issue Type: New Feature
>          Components: Query Processor
>            Reporter: Namit Jain
>
> Many times, because of a few bad input rows, the whole job fails and it takes a long
time to debug those.
> It might be very useful to add some constraints, which can be checked while reading the
data.
> An option can be added to ignore configurable number of bad rows.

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