solrsolr6

Solr 6 highlighting does not show content or _text_

I have a solr 6.6.0 instance running and have indexed some docs - PDF and HTML. Previously I had solr 4 and searching with highlighting results was fine. Unfortunately this (default) behaviour seems to have disappeared in v6. The setup is the default one mentioned by the original solr tutorial. I played around with a lot of GET parameters but cannot geht highlighted content. I appreciate any hint or tipp to get this running. Am I missing some config changes or parameters?

E.g.

http://serv1:8983/solr/gettingstarted/select?wt=json&indent=true&q=betreten&hl=true&hl.method=unified

gives

{
  "responseHeader":{
    "zkConnected":true,
    "status":0,
    "QTime":152,
    "params":{
      "q":"betreten",
      "hl":"true",
      "indent":"true",
      "hl.method":"unified",
      "wt":"json"}},
  "response":{"numFound":1,"start":0,"maxScore":0.822483,"docs":[
      {
        "id":"/var/docs/2017/08/22/2319/page-1.html",
        "stream_size":[3820],
        "x_parsed_by":["org.apache.tika.parser.DefaultParser",
          "org.apache.tika.parser.html.HtmlParser"],
        "stream_content_type":["text/html"],
        "dc_title":["/var/docs/2017/08/22/2319/page-1.html (22.08.2017 23:19)"],
        "ocr_system":["tesseract 3.04.01"],
        "content_encoding":["UTF-8"],
        "content_type_hint":["text/html; charset=utf-8"],
        "resourcename":["/var/docs/2017/08/22/2319/page-1.html"],
        "title":["/var/docs/2017/08/22/2319/page-1.html (22.08.2017 23:19)"],
        "content_type":["application/xhtml+xml; charset=UTF-8"],
        "ocr_capabilities":["ocr_page ocr_carea ocr_par ocr_line ocrx_word"],
        "_version_":1576604407523442688}]
  },
  "highlighting":{
    "/var/docs/2017/08/22/2319/page-1.html":{
      "_text_":[]}}}

Thank you!

Solution

  • Highlighter generally analyze stored text on the fly in order to highlight.

    In your schema please check if _text_ is stored or not. If it is managed schema then _text_ may not be stored. Please check following _text_ config in managed-schema or schema.xml 

    <field name="_text_" type="text_general" multiValued="true" indexed="true" stored="false"/>

    stored=false indicates that contents of _text_ are not stored. If you set stored="true" then _text_ will be stored and will be available for highlight.

    Note: After changing schema.xml or managed-schema files,