elasticsearch - I can't get nested stored_fields -


all. i'm using elasticsearch 5.0 , have next mapping:

{     "mappings": {         "object":{             "properties":{                 "attributes":{                     "type":"nested",                     "properties":{                         "name": { "type": "keyword", "store":true},                         "value": { "type": "text", "store":true },                         "converted": {"type": "double", "store":true},                         "datetimestamp": { "type": "date", "store":true}                     }                 }             }         }     } }

then add 1 document:

{     "attributes":[         {"name":"attribute_string", "value":"string_value","converted":null,"datetimestamp":null},         {"name":"attribute_double", "value":"1234.567","converted":1234.567,"datetimestamp":null},         {"name":"attribute_datetime", "value":"2015-01-01t12:10:30z","converted":null,"datetimestamp":"2015-01-01t12:10:30z"}         ]     }

when query w/ "stored_fields", don't have fields in results:

_search {     "stored_fields":["attributes.converted"] }

results:

{     "_index": "test_index",     "_type": "object",     "_id": "1",     "_score": 1  }

but when use "_source":["attributes.converted"] , have result:

 {     "_index": "test_index",     "_type": "object",     "_id": "1",     "_score": 1,     "_source": {        "attributes": [           { "converted": null  },           { "converted": 1234.567  },           { "converted": null     }        ]     }  }

what proper way use stored_fields? usage of "_source" affect performance compare "stored_fields" approach?

if "_source" approach fast "stored_fields", shall remove "store":true fields?

thank you.

you're using nested types, use inner_hits.

in nested case, documents returned based on matches in nested inner objects.

documentation: https://www.elastic.co/guide/en/elasticsearch/reference/current/search-request-inner-hits.html


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