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https://issues.apache.org/jira/browse/SOLR-15555?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17389068#comment-17389068
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David Smiley commented on SOLR-15555:
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I'm glad to see AsyncCache, and thus this PR can remove FutureDocSet.java which
I don't really like.
> Use filterCache.computeIfAbsent in SolrIndexSearcher
> ----------------------------------------------------
>
> Key: SOLR-15555
> URL: https://issues.apache.org/jira/browse/SOLR-15555
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Mike Drob
> Priority: Major
> Time Spent: 1.5h
> Remaining Estimate: 0h
>
> When multiple concurrent queries come in at the same time, in several cases
> they can trigger concurrent computations of a DocSet for the cache. We should
> investigate where this happens and possibly take care to only do a single
> computation when possible.
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