jpountz opened a new pull request, #13943:
URL: https://github.com/apache/lucene/pull/13943
`TopScoreDocCollectorManager` has a dependency on `HitsThresholdChecker`,
which is essentially a shared counter that is incremented until it reaches the
total hits threshold, when the scorer can start dynamically pruning hits.
A consequence of this removal is that dynamic pruning may start later, as
soon as:
- either the current slice collected `totalHitsThreshold` hits,
- or another slice collected `totalHitsThreshold` hits and the current
slice collected enough hits (up to 1,024) to check the shared
`MaxScoreAccumulator`.
So in short, it exchanges a bit more work globally in favor of a bit less
contention. A longer-term goal of mine is to stop specializing our
`CollectorManager`s based on whether they are going to be used concurrently or
not.
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