Probably the most common reason is the default hl.maxAnalyzedChars -- thus your highlightable text might not be in the first 51200 chars of text. The first Solr release with the unified highlighter had an even lower default of 10k chars.
On Fri, Jun 9, 2017 at 9:58 PM Phil Scadden <p.scad...@gns.cri.nz> wrote: > Tried hard to find difference between pdfs returning no highlighter and > ones that do for same search term. Includes pdfs that have been OCRed and > ones that were text to begin with. Head scratching to me. > > -----Original Message----- > From: Erick Erickson [mailto:erickerick...@gmail.com] > Sent: Saturday, 10 June 2017 6:22 a.m. > To: solr-user <solr-user@lucene.apache.org> > Subject: Re: Highlighter not working on some documents > > Need lots more information. I.e. schema definitions, query you use, > handler configuration and the like. Note that highlighted fields must have > stored="true" set and likely the _text_ field doesn't. At least in the > default schemas stored is set to false for the catch-all field. > And you don't want to store that information anyway since it's usually the > destination of copyField directives and you'd highlight _those_ fields. > > Best, > Erick > > On Thu, Jun 8, 2017 at 8:37 PM, Phil Scadden <p.scad...@gns.cri.nz> wrote: > > Do a search with: > > fl=id,title,datasource&hl=true&hl.method=unified&limit=50&page=1&q=pre > > ssure+AND+testing&rows=50&start=0&wt=json > > > > and I get back a good list of documents. However, some documents are > returning empty fields in the highlighter. Eg, in the highlight array have: > > "W:\\Reports\\OCR\\4272.pdf":{"_text_":[]} > > > > Getting this well up the list of results with good highlighted matchers > above and below this entry. Why would the highlighter be failing? > > > > Notice: This email and any attachments are confidential and may not be > used, published or redistributed without the prior written consent of the > Institute of Geological and Nuclear Sciences Limited (GNS Science). If > received in error please destroy and immediately notify GNS Science. Do not > copy or disclose the contents. > Notice: This email and any attachments are confidential and may not be > used, published or redistributed without the prior written consent of the > Institute of Geological and Nuclear Sciences Limited (GNS Science). If > received in error please destroy and immediately notify GNS Science. Do not > copy or disclose the contents. > -- Lucene/Solr Search Committer, Consultant, Developer, Author, Speaker LinkedIn: http://linkedin.com/in/davidwsmiley | Book: http://www.solrenterprisesearchserver.com
