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From "Corey J. Nolet (JIRA)" <>
Subject [jira] [Commented] (ACCUMULO-3494) Predicate pushdown API (BaseRelation) to push down OR operators
Date Sat, 17 Jan 2015 06:02:34 GMT


Corey J. Nolet commented on ACCUMULO-3494:

This was supposed to be for the Spark JIRA... 

> Predicate pushdown API (BaseRelation) to push down OR operators
> ---------------------------------------------------------------
>                 Key: ACCUMULO-3494
>                 URL:
>             Project: Accumulo
>          Issue Type: Improvement
>            Reporter: Corey J. Nolet
> Currently, the BaseRelation API allows a FilteredRelation to handle an Array[Filter]
which represents a bunch of filter operations that are applied as an AND- that is, the set
returned should be the intersection of all of the given filters.
> It would be very much useful if OR operations could be applied in a BaseRelation as well.
I'm not sure what this would look like in terms of API changes, but it almost seems like a
FilteredUnionedScan BaseRelation (the name stinks but you get the idea) would be useful. 

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