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https://issues.apache.org/jira/browse/SOLR-7655?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14579478#comment-14579478
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David Smiley commented on SOLR-7655:
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This was discovered via a commenter here:
https://issues.apache.org/jira/browse/SOLR-5855?focusedCommentId=14578437&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14578437
(the purpose of that issue is unrelated to the discovery in the stack traces
posted)
> Perf bug- DefaultSolrHighlighter.getSpanQueryScorer triggers
> MultiFields.getMergedFieldInfos
> --------------------------------------------------------------------------------------------
>
> Key: SOLR-7655
> URL: https://issues.apache.org/jira/browse/SOLR-7655
> Project: Solr
> Issue Type: Bug
> Components: highlighter
> Affects Versions: 5.0
> Reporter: David Smiley
> Assignee: David Smiley
>
> It appears grabbing the FieldInfos from the SlowCompositeReaderWrapper is
> slow. It isn't cached. The DefaultSolrHighligher in SOLR-6196 (v5.0) uses
> it to ascertain if there are payloads. Instead it can grab it from the Terms
> instance, which is cached.
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