msokolov commented on issue #854: Shared PQ Based Early Termination for Concurrent Search URL: https://github.com/apache/lucene-solr/pull/854#issuecomment-530575471 There is also the option of something in between. To avoid thread contention, could we just make uncoordinated read/write of a minimum minimum score. If a thread fails to write (its write is overwritten by some other thread with a worse minimum, still an improvement), all it costs you (or some other thread) is some extra work, perhaps cheaper than the coordination and priority queue or array scanning. You could also choose to write only occasionally, to further reduce contention.
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