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From "Brian Loss (JIRA)" <j...@apache.org>
Subject [jira] [Created] (ACCUMULO-1666) Provide a way to declare iterator dependencies on other iterators
Date Mon, 26 Aug 2013 15:52:52 GMT
Brian Loss created ACCUMULO-1666:
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             Summary: Provide a way to declare iterator dependencies on other iterators
                 Key: ACCUMULO-1666
                 URL: https://issues.apache.org/jira/browse/ACCUMULO-1666
             Project: Accumulo
          Issue Type: Improvement
            Reporter: Brian Loss


Sometimes iterators really only make sense when they are used in conjunction with other iterators,
but it doesn't make sense to implement the functionality in a single iterator.  It would be
nice if Accumulo had a way to declare that an iterator depends on another iterator or iterators.

Perhaps this could be done by annotating the iterator class, and then when the tablet server
adds an iterator to the stack, it could ensure that the dependent iterators are already on
the stack and throw an error if not.

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