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https://issues.apache.org/jira/browse/LUCENE-8213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16940024#comment-16940024
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ASF subversion and git services commented on LUCENE-8213:
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Commit 0dfbf557bae67acaf9c920cb51a04b7c7341d621 in lucene-solr's branch
refs/heads/master from Atri Sharma
[ https://gitbox.apache.org/repos/asf?p=lucene-solr.git;h=0dfbf55 ]
LUCENE-8213: Introduce Asynchronous Caching in LRUQueryCache (#815)
Introduce asynchronous caching for heavy queries using the passed in Executor
to IndexSearcher.
> Cache costly subqueries asynchronously
> --------------------------------------
>
> Key: LUCENE-8213
> URL: https://issues.apache.org/jira/browse/LUCENE-8213
> Project: Lucene - Core
> Issue Type: Improvement
> Components: core/query/scoring
> Affects Versions: 7.2.1
> Reporter: Amir Hadadi
> Priority: Minor
> Labels: performance
> Time Spent: 9h 40m
> Remaining Estimate: 0h
>
> IndexOrDocValuesQuery allows to combine costly range queries with a selective
> lead iterator in an optimized way. However, the range query at some point
> gets cached by a querying thread in LRUQueryCache, which negates the
> optimization of IndexOrDocValuesQuery for that specific query.
> It would be nice to see an asynchronous caching implementation in such cases,
> so that queries involving IndexOrDocValuesQuery would have consistent
> performance characteristics.
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