Fast vector highlighting span queries for nested documents #24318
Description
Elasticsearch version: 5.3.1
Plugins installed: [mapper-murmur3, mapper-size, x-pack]
JVM version: OpenJDK 1.8.0_131
OS version: CentOS Linux release 7.3.1611 (Core)
Description of the problem including expected versus actual behavior:
Fast vector highlighting does not work on a nested document, with span_near or span_first queries (additional span queries may be affected)
Steps to reproduce:
1.
PUT /test
{
"settings" : {
"index" : {
"number_of_shards" : 1,
"number_of_replicas" : 0
}
},
"mappings" : {
"object" : {
"properties" : {
"document_part" : {
"type" : "nested",
"properties": {
"text": {
"type": "text",
"term_vector": "with_positions_offsets"
}
}
}
}
}
}
}
POST /test/object/1
{
"document_part": {
"text": "Here is some text to be analyzed and later queried on. Let us use everyones favourite... The cat sat on the mat near the dog. The cat saw the dog."
}
}
GET /test/object/_search
{
"_source": false,
"query": {
"nested": {
"path": "document_part",
"query": {
"span_near": {
"clauses": [
{
"span_term": { "document_part.text": "cat" }
},
{
"span_term": { "document_part.text": "dog" }
}
],
"slop": 5,
"in_order": false
}
},
"inner_hits": {
"_source": false,
"highlight": {
"fields": {"document_part.text": {}}
}
}
}
}
}
- Note that in the response the _search in step 3, a hit is found, but no higlight. With just a span_term query the highlight is seen. And forcing the highlight type to be "plain" the highlight is seen.