Elasticsearch term suggester does not return results on exact match

Question

when i request the suggester with

{
    "my-title-suggestions-1": {
       "text": "tücher                ",
       "term": {
            "field": "name",
       }
    },
    "my-title-suggestions-2": {
       "text": "tüchers                ",
       "term": {
           "field": "name"
       }
    }
}

it returns

{
    "_shards": {
    "total": 5,
    "successful": 5,
    "failed": 0
    },
    "my-title-suggestions-1": [
    {
        "text": "tücher",
        "offset": 0,
        "length": 6,
        "options": []
    }
    ],
    "my-title-suggestions-2": [
    {
        "text": "tüchers",
        "offset": 0,
        "length": 7,
        "options": [
            {
                "text": "tücher",
                "score": 0.8333333,
                "freq": 6
            }
        ]
    }
    ]
}

i wonder why it does not return the exact match with the first suggester? the second suggester obviously has that result.

can i add other options which will resolve this behavior?

edit: the minimal mapping is just this ...

{
"name" : {
        "analyzer" : "standard",
        "type" : "string"
    }
}

@madsen the specific structure of the mapping should be irrelevant ... it has a string field named name ... however i added the mapping — Summer-Sky, Nov 21 '15 at 19:19
It's not necessarily irrelevant if the field is analyzed, filtered and/or tokenized. — madsen, Nov 21 '15 at 19:31
I currently have the same problem. Here is the the relevant [issue](https://github.com/elastic/elasticsearch/issues/11579) and [pull request](https://github.com/elastic/elasticsearch/pull/15410). Currently open but seems ready for merge. — worldsayshi, Oct 13 '16 at 10:03

score 1 · Answer 1 · answered Nov 21 '15 at 19:53

1

I dont think you can do that and I am not sure why do you want exact match in suggestions, after all they are "suggestions".

Normally they are used to check misspelling. It will give you candidate suggestions that are similar and fall in edit distance of 2 for the word you entered.

answered Nov 21 '15 at 19:53

ChintanShah25

12,366
3
43
44

2

yes, im currently poisoning the request with an additional character and this "works for me" for now ... – Summer-Sky Nov 23 '15 at 13:43

score 1 · Accepted Answer · answered Nov 21 '15 at 20:31

1

To add to what @ChintanShah25 said: According to https://www.elastic.co/guide/en/elasticsearch/reference/2.0/search-suggesters-term.html (see suggest_mode) the Term suggester will by default:

Only provide suggestions for suggest text terms that are not in the index.

answered Nov 21 '15 at 20:31

madsen

422
3
9

3

It doesn't seem like even using `always` causes an exact match to come back, at least not in es1.5 – EdgeCaseBerg Jun 02 '16 at 16:32

Elasticsearch term suggester does not return results on exact match

2 Answers2