Checkpointing iterators during search
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United States of America Patent
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May 27, 2014
Grant Date -
Nov 15, 2012
app pub date -
Jul 25, 2012
filing date -
Aug 31, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
Tools and techniques are described herein for checkpointing iterators during search. These tools may provide methods that include instantiating iterators in response to a search request. The iterators include fixed state information that remains constant over a life of the iterator, and further include dynamic state information that is updated over the life of the iterator. The iterators traverse through postings lists in connection with performing the search request. As the iterators traverse the posting lists, the iterators may update their dynamic state information. The iterators may then evaluate whether to create checkpoints, with the checkpoints including representations of the dynamic state information.
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