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https://issues.apache.org/jira/browse/SOLR-6680?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14229012#comment-14229012
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ASF subversion and git services commented on SOLR-6680:
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Commit 1642511 from [~dsmiley] in branch 'dev/branches/branch_5x'
[ https://svn.apache.org/r1642511 ]
SOLR-6680: DefaultSolrHighlighter: avoid CachingTokenFilter when not needed
> DefaultSolrHighlighter can sometimes avoid CachingTokenFilter
> -------------------------------------------------------------
>
> Key: SOLR-6680
> URL: https://issues.apache.org/jira/browse/SOLR-6680
> Project: Solr
> Issue Type: Improvement
> Components: highlighter
> Reporter: David Smiley
> Assignee: David Smiley
> Fix For: 5.0
>
> Attachments: SOLR-6680.patch, SOLR-6680.patch
>
>
> The DefaultSolrHighlighter (the most accurate one) is a bit over-eager to
> wrap the token stream in a CachingTokenFilter when
> hl.usePhraseHighlighter=true. This wastes memory, and it interferes with
> other optimizations -- LUCENE-6034. Furthermore, the internal
> TermOffsetsTokenStream (used when TermVectors are used with this) wasn't
> properly delegating reset().
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