add highlight does not work with has_child query in Elasticsearch 2.3.3

Question

When I use hasChildQuery,everything works OK.But when I add addHighlightedField() method,it does not work.The following is my code:

TermsLookupQ         


        

Answer 1

This is related to the bug specified in the git issue here . The workaround as mentioned in the thread is to specify it in highlight_query

Example :

PUT test
{
   "mappings": {
      "my_parent": {
         "_all": {
            "store": true
         }
      },
      "my_child": {
         "_parent": {
            "type": "my_parent"
         }
      }
   }
}

PUT test/my_parent/1 
{
  "text": "This is a parent document"
}

PUT test/my_child/2?parent=1 
{
  "text": "This is a child document"
}

POST test/my_parent/_search
{
   "query": {
      "bool": {
         "must": [
            {
               "has_child": {
                  "type": "my_child",
                  "query": {
                     "match": {
                        "text": "child document"
                     }
                  }
               }
            },
            {
               "match": {
                  "_all": "parent"
               }
            }
         ]
      }
   },
   "highlight": {
      "fields": {
         "_all": {}
      },
      "highlight_query": {
         "match": {
            "_all": "parent"
         }
      }
   }
}

Results :

  {
            "_index": "test",
            "_type": "my_parent",
            "_id": "1",
            "_score": 1.016466,
            "_source": {
               "text": "This is a parent document"
            },
            "highlight": {
               "_all": [
                  "This is a <em>parent</em> document "
               ]
            }
         }

In Java Client you should be able to achieve it via this api