[SOLR-7655] Perf bug- DefaultSolrHighlighter.getSpanQueryScorer triggers MultiFields.getMergedFieldInfos

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 5.0
• Fix Version/s: 5.2.1
• Component/s: highlighter
• Assignee: David Smiley
• Reporter: David Smiley
• Created: 09/Jun/15 19:47
• Updated: 16/Jun/15 11:54
• Resolved: 10/Jun/15 13:00

Description

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.