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From "Christopher Tubbs (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-4595) Simple validator for inserting data
Date Fri, 03 Mar 2017 22:24:45 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-4595?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15895148#comment-15895148
] 

Christopher Tubbs commented on ACCUMULO-4595:
---------------------------------------------

A custom output format could be modified to validate table constraints. That seems like the
simplest option.

> Simple validator for inserting data
> -----------------------------------
>
>                 Key: ACCUMULO-4595
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-4595
>             Project: Accumulo
>          Issue Type: New Feature
>            Reporter: Michael Wall
>            Priority: Minor
>             Fix For: 2.0.0
>
>
> It would be useful to be able to write custom validation for specific parts of a Key
or Value that could be applied to both mutations on live ingest and writing RFiles for bulk
loads.  Initially I thought this could be done with a table constraint, but didn't consider
the importdirectory use case where RFiles are bulk imported.  This validation does not need
to track state though.  Thinking this is really only for simple validation.  Couple of contrived
examples.
> 1) Validate the CF starts with the string "abcd".
> 2) Validate the CV only contains strings from a predefined list of strings.
> 3) Validate the row only contains letters or numbers.



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