Adrien Grand created LUCENE-7332:
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Summary: Better propagate two-phase iterators in conjunctions
Key: LUCENE-7332
URL: https://issues.apache.org/jira/browse/LUCENE-7332
Project: Lucene - Core
Issue Type: Improvement
Reporter: Adrien Grand
Assignee: Adrien Grand
Priority: Minor
I suspect it is very common to have a single two-phase iterator to check in a
query tree. Yet, even in that case, the way the API works currently forces
ConjunctionDISI to wrap it anyway in order to propagate it to the higher level.
I'd like to explore changing the API so that the top-level scorer would
directly call the two-phase iterator instead of going through multiple wrappers.
Then we might be able to add the same RandomAccessStratogy optimization as
FilteredQuery had in case a two-phase iterator supports random-access and is
expected to match many documents.
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