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https://issues.apache.org/jira/browse/LUCENE-10120?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17438725#comment-17438725
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Adrien Grand commented on LUCENE-10120:
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One thing I'm curious about is what are the queries that end up matching
contiguous ranges of doc IDs?
Am I right to assume that index sorting is involved somehow?
Maybe the queries we're talking about are so cheap (like
{{IndexSortSortedNumericDocValuesRangeQuery}}) that they should actually never
make it to the query cache?
> Lazy initialize FixedBitSet in LRUQueryCache
> --------------------------------------------
>
> Key: LUCENE-10120
> URL: https://issues.apache.org/jira/browse/LUCENE-10120
> Project: Lucene - Core
> Issue Type: Improvement
> Components: core/search
> Affects Versions: main (10.0)
> Reporter: Lu Xugang
> Priority: Major
> Attachments: 1.png, LUCENE-10120.patch
>
> Time Spent: 2h 50m
> Remaining Estimate: 0h
>
> Basing on the implement of collecting docIds in DocsWithFieldSet, may be we
> could do similar way to cache docIdSet in
> *LRUQueryCache#cacheIntoBitSet(BulkScorer scorer, int maxDoc)* when docIdSet
> is density.
> In this way , we do not always init a huge FixedBitSet which sometime is not
> necessary when maxDoc is large
>
>
>
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