Subject: Discrepancy in Search Highlighting Between Apache Solr 6.6 and 9.7
Dear Solr Team,
I hope you are doing well.
My name is Vinod Gupta, and I am a Full Stack Development Engineer at Clarivate
Analytics Pvt Ltd, Bangalore, India.
In our application, we have been using Apache Solr 6.6 for search and indexing.
Recently, we decided to drop Apache Solr 6.6 and use Apache Solr 9.7 and have
successfully created indices in the new system.
A sample index structure in Solr 9.7 is as follows:
json
"docs": [{
"entityId": "1377668",
"entityName": "Card",
"docType": "fullIndex",
"docId": "fullIndex-card-1377668",
"fullText_public": [
"Caban", "Irvin",
"Caban, Irvin - Department of Applied Physics (Active)",
"Caban, Irvin - Institut für Angewandte Physik (Aktiv)"
],
"fullText_intern": [
"Caban", "Irvin",
"Caban, Irvin - Department of Applied Physics (Active)",
"Caban, Irvin - Institut für Angewandte Physik (Aktiv)"
],
"_version_": 1823199209666379787,
"timestamp_now": "2025-02-05T06:50:59.911Z"
}]
However, we have noticed a discrepancy in search highlighting between Solr 6.6
and Solr 9.7.
Query Executed in the Solr UI:
(fullText_public:(Caban* )) AND (entityName: (Card* ))
Response in Solr 6.6:
json
"highlighting": {
"fullIndex-card-1377668": {
"fullText_intern": ["<em>Caban, Irvin - Department of Applied Physics
(Active)</em>"]
}
}
Response in Solr 9.7:
json
"highlighting": {
"fullIndex-card-1377668": {
"fullText_intern": ["<em>Caban</em>"]
}
}
Problem:
The highlighting behavior differs between the two versions. In Solr 6.6, the
full phrase "Caban, Irvin - Department of Applied Physics (Active)" is
highlighted, whereas in Solr 9.7, only "Caban" is highlighted.
Could you please provide guidance on this issue? Is there any configuration
change or update in Solr 9.7 that might be affecting the highlighting behavior?
Looking forward to your insights.
Best regards,
Vinod Gupta
Full Stack Development Engineer
Clarivate Analytics Pvt Ltd, Bangalore, India
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