Parent/child inner hits not containing the fields values

[albanm]

Hello,

The parent/child inner hits seem to support requesting only the '_source' field. Inner hits on nested objects on the contrary support asking for any field.

The documentation is not extremely clear on the subject, but I think it should work.

I have this behavior on ElasticSearch 1.7.2.

This script reproduces the problem in the more concise way i could think of:

printf "Delete index:\n\n"
curl -XDELETE localhost:9200/test

printf "\n\nPrepare mappings with parent/child relationship and some nested object:\n\n"
curl -XPUT localhost:9200/test -d '{
  "mappings": {
    "company": {
      "properties": {
        "addresses": {
          "type": "nested"
        }
      }
    },
    "employee": {
      "_parent": {
        "type": "company"
      }
    }
  }
}'

printf "\n\nInsert a company with nested address:\n\n"
curl -XPUT localhost:9200/test/company/mgdis -d '{
  "companyName": "MGDIS",
  "addresses": [{
    "city": "Vannes",
    "country": "France"
  }]
}'

printf "\n\nInsert a employee child of the company:\n\n"
curl -XPUT localhost:9200/test/employee/alban?parent=mgdis -d '{
  "name": "Alban Mouton"
}'

printf "\n\nFlush index:\n\n"
curl -XPOST 'http://localhost:9200/test/_flush'

printf "\n\nSearch a company with nested addresses in inner hits. The field 'city' IS PRESENT:\n\n"
curl -XPOST localhost:9200/test/company/_search -d '{
  "query": {
    "nested": {
      "path": "addresses",
      "query": {
        "match_all": {}
      },
      "inner_hits": {
        "fields": ["city"]
      }
    }
  }
}'

printf "\n\nSearch an employee with parent company in inner hits. The field 'companyName' SHOULD BE PRESENT:\n\n"
curl -XPOST localhost:9200/test/employee/_search -d '{
  "query": {
    "has_parent": {
      "parent_type": "company",
      "query": {
        "match_all": {}
      },
      "inner_hits": {
        "fields": ["companyName"]
      }
    }
  }
}'

printf "\n\nSearch a company with child employee in inner hits. The field 'name' SHOULD BE PRESENT:\n\n"
curl -XPOST localhost:9200/test/company/_search -d '{
  "query": {
    "has_child": {
      "type": "employee",
      "query": {
        "match_all": {}
      },
      "inner_hits": {
        "fields": ["name"]
      }
    }
  }
}'

[martijnvg]

Hi @albanm if you remove the company/employee type from the url then I expect the last two queries to work.

There is an issue with the inner query wrapped has_child/has_parent can't access mapping information from the child or parent type if a type is specified in the url. This has been fixed in 2.0.

[albanm]

Indeed it works !

Thanks a lot for the quick response.