Description
Docker image
docker.elastic.co/elasticsearch/elasticsearch:7.13.2
Elasticsearch version (bin/elasticsearch --version):
Version: 7.13.2, Build: default/docker/4d960a0733be83dd2543ca018aa4ddc42e956800/2021-06-10T21:01:55.251515791Z, JVM: 16
Plugins installed: []
JVM version (java -version):
openjdk 16 2021-03-16
OpenJDK Runtime Environment AdoptOpenJDK (build 16+36)
OpenJDK 64-Bit Server VM AdoptOpenJDK (build 16+36, mixed mode, sharing)
OS version (uname -a if on a Unix-like system):
Linux bf00e93afa1f 4.19.128-microsoft-standard #1 SMP Tue Jun 23 12:58:10 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
Description of the problem including expected versus actual behavior:
FVH (fast vector highlighter) does not highlight subfields that was indexed from array.
Steps to reproduce:
# create index and mappings for text field and subfield: prop1 and prop1.fld1
curl -XPUT "http://elastic:9200/test"
curl -XPUT "http://elastic:9200/test/_mapping" -H 'Content-Type: application/json' -d'
{
"properties": {
"prop1": {
"type": "text",
"analyzer": "english",
"index_options": "offsets",
"term_vector": "with_positions_offsets",
"fields": {
"fld1": {
"type": "text",
"analyzer": "english",
"index_options": "offsets",
"term_vector": "with_positions_offsets"
}
}
}
}
}'
# add two documents with property prop1 as string and as array
curl -XPUT "http://elastic:9200/test/_doc/1" -H 'Content-Type: application/json' -d'
{
"prop1": "foo bar baz"
}'
curl -XPUT "http://elastic:9200/test/_doc/2" -H 'Content-Type: application/json' -d'
{
"prop1": [ "foo bar baz" ]
}'
# perform search and highlight on all fields/subfields
curl -XGET "http://elastic:9200/test/_search" -H 'Content-Type: application/json' -d'
{
"query": {
"simple_query_string": {
"query": "bar"
}
},
"highlight": {
"type": "fvh",
"fields": {
"*": {}
}
}
}'
I expect that both documents will be found, each with 2 highlighted fields:
...
"highlight" : {
"prop1" : [
"foo <em>bar</em> baz"
],
"prop1.fld1" : [
"foo <em>bar</em> baz"
]
}
...
But document 2 returned with only prop1 highlighted:
...
"highlight" : {
"prop1" : [
"foo <em>bar</em> baz"
]
}
...