Atri Sharma created LUCENE-8875:
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Summary: Should TopScoreDocCollector Always Populate Sentinel
Values?
Key: LUCENE-8875
URL: https://issues.apache.org/jira/browse/LUCENE-8875
Project: Lucene - Core
Issue Type: Improvement
Reporter: Atri Sharma
TopScoreDocCollector always initializes HitQueue as the PQ implementation, and
instruct HitQueue to populate with sentinels. While this is a great safety
mechanism, for very large datasets where the query's selectivity is high, the
sentinel population can be redundant and can become a large enough bottleneck
in itself. Does it make sense to introduce a new parameter in
TopScoreDocCollector which uses a heuristic (say number of hits > 10k) and does
not populate sentinels?
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