Atri Sharma created LUCENE-8950:
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Summary: FieldComparators Should Not Maintain Implicit PQs
Key: LUCENE-8950
URL: https://issues.apache.org/jira/browse/LUCENE-8950
Project: Lucene - Core
Issue Type: Improvement
Reporter: Atri Sharma
While doing some perf tests, I realised that FieldComparators inherently
maintain implicit priority queues for maintaining the sorted order of documents
for the given sort order. This is wasteful especially in the case of a multi
feature sort order and a large number of hits requested.
We should change this to have FieldComparators maintain only the top and bottom
values, and use them as barriers to compare
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