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From "Keith Turner (JIRA)" <>
Subject [jira] [Commented] (ACCUMULO-1000) support compare and set
Date Wed, 05 Jun 2013 22:52:20 GMT


Keith Turner commented on ACCUMULO-1000:

bq. What about ifExists(cf, cq, cv, val) and ifAbsent(cf, cq, cv)

I kinda like this, however to me it does not connotate that you are adding to a list of conditions/tests/checks
that must be satisfied before a mutation is applied.  I am too excited about any of the names
that have been proposed.  The thing I like most about ifExists() and ifAbsent() is they are

bq. This means that my pre-commit check is an equality operation, which may not be enough.

thats one thing I was thinking when I proposed putEqualityTest().. that maybe other test would
be wanted in the future like putLessThanTest() or putGreaterThanTest()... not something I
want do now.
> support compare and set
> -----------------------
>                 Key: ACCUMULO-1000
>                 URL:
>             Project: Accumulo
>          Issue Type: New Feature
>          Components: client, tserver
>            Reporter: Keith Turner
>            Assignee: Keith Turner
>             Fix For: 1.6.0
>         Attachments: ACCUMULO-1000-proposal-01.html, ACCUMULO-1000-proposal-01.txt
> Add support to mutation for compare and set operations.  This would allow user to specify
that a row must contain certain data for a mutation to be applied.

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