I am running Solr 8.4 and am attempting to use its highlighting feature. It appears to work well when I use the original highlighter or the term vector highlighter, but when I try to use the unified highlighter, I get no results returned. My Google searches so far have not revealed anybody having this same problem (perhaps user error on my part), hence why I’m asking a question to the Solr mailing list.
I am running a query which searches the “title_text” field for a term and highlights it. The configuration for title_text is this: <field name="title_text" type="text_en" indexed="true" stored="true" multiValued="true" termVectors="true"/> The query looks like this: https://solr-server/index/c1/select?hl.fl=title_text&hl.method=unified&hl=true&q= title_text%3Azelda If hl.method=original or hl.method=termvector, I get back results in the highlighting section with “Zelda” surrounded by <em> tags. If hl.method=unified, all results in the highlighting section are blank. I’ve attached a remote debugger to my Solr server and verified that the unified highlighter class (org/apache/solr/highlight/UnifiedSolrHighlighter.java) is being invoked when I set hl.method=unified. And I do not see any errors in the Solr logs. Any idea what I’m doing wrong? In looking at the Solr highlighting documentation, I didn’t see any additional configuration which needs to be done to get the unified highlighter to work. I realize I have not provided a bunch of information here, but obviously can provide more if needed. Thank you, David Warren Booz | Allen | Hamilton 703-625-0311 mobile
