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From "Eric Newton (JIRA)" <j...@apache.org>
Subject [jira] [Created] (ACCUMULO-625) consider augmenting session state with "breadcrumbs"
Date Thu, 07 Jun 2012 12:02:22 GMT
Eric Newton created ACCUMULO-625:
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             Summary: consider augmenting session state with "breadcrumbs"
                 Key: ACCUMULO-625
                 URL: https://issues.apache.org/jira/browse/ACCUMULO-625
             Project: Accumulo
          Issue Type: Improvement
          Components: tserver
            Reporter: Eric Newton
            Assignee: Keith Turner


Presently, the iterator stack can be created and destroyed at the whim of the tserver and
its buffering needs.  In complex iterations, lower-level iterators can make significant progress
which is not inherently obvious in any returned key.  When the iterator stack is re-created
to continue a query, the last key returned is used to {{seek()}} the iterators.  Lower-level
iterators must re-scan their data to move back to the old position.

Consider a mechanism to save progress beyond the last key returned.
  

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