Solr not returning highlighted results - solr

Question

I am using nutch 1.15 and solr 7.3, and I followed search highlight as per doc - https://lucene.apache.org/solr/guide/7_3/highlighting.html
For me, normal query for nutch solr search is working and it is returning results:
curl http://localhost:8983/solr/nutch/select?q=content:build&wt=json&rows=10000&start=0
With search highlight query I am getting same results but getting a warning.- hl.q=content:build: not found
The query with highlight params are like below - curl http://localhost:8983/solr/nutch/select?q=content:build&hl=on&hl.q=content:build&wt=json&rows=10000&start=0
See the complete response -
$ curl http://localhost:8983/solr/nutch/select?q=content:build&hl=on&hl.q=content:build&wt=json&rows=10000&start=0
-sh: 8: hl.q=content:build: not found
[3] Done(127) hl.q=content:build
[2] Done curl http://localhost:8983/solr/nutch/select?q=content:build
$ {
"responseHeader":{
"status":0,
"QTime":1,
"params":{
"q":"content:build"}},
"response":{"numFound":2,"start":0,"docs":[
{
"digest":"ff0d20368525b3a0f14933eddb0809db",
"boost":1.0151907,
"id":"https://dummy_url",
"title":"dummy title",
"content":"dummy content",
"_version_":1691148343590256640},
{
"digest":"4fd333469ed5d83ad08eaa7ef0b779c4",
"boost":1.0151907,
"id":"https://dummy_url1",
"title":"dummy title1",
"content":"dummy content1",
"_version_":1691148343603888128}]
}}
Anyone have idea on how to resolve this? I am not getting any errors in nutch and solr logs.

Answer 1

You're not running the command you think you're running - & signals to the shell that the command should be run in the background, so what's effectively happening is that you're running multiple commands:
curl http://localhost:8983/solr/nutch/select?q=content:build
hl=on
hl.q=content:build
wt=json
rows=10000
start=0
This is not what you intend to do. You can either wrap your URL within quotes (") or escape the ampersands:
curl "http://localhost:8983/solr/nutch/select?q=content:build&hl=on&hl.q=content:build&wt=json&rows=10000&start=0"
# or
curl http://localhost:8983/solr/nutch/select? q=content:build\&hl=on\&hl.q=content:build\&wt=json\&rows=10000\&start=0