ElasticSearch API - update by query script params null_pointer_exception

Question

I am new to the ElasticSearch and am i trying to make use of the _update_by_query route. I am sending this body:

{
"query": {
    "match": {
        "id": "fdfsfsfs-058f-437d-bc52-473808ba61c2"
    }
},
"script": {
    "inline": "ctx._source.addresses.add(params.data)",
    "params": {
        "data": {
            "street": "Road",
            "number": 15,
            "county": "WWW"
        }
    }
}

}

but I get the following response:

{
"error": {
    "root_cause": [
        {
            "type": "script_exception",
            "reason": "runtime error",
            "script_stack": [
                "ctx._source.addresses.add(params.data)",
                "                                ^---- HERE"
            ],
            "script": "ctx._source.addresses.add(params.data)",
            "lang": "painless",
            "position": {
                "offset": 30,
                "start": 0,
                "end": 36
            }
        }
    ],
    "type": "script_exception",
    "reason": "runtime error",
    "script_stack": [
        "ctx._source.addresses.add(params.data)",
        "                              ^---- HERE"
    ],
    "script": "ctx._source.addresses.add(params.data)",
    "lang": "painless",
    "position": {
        "offset": 30,
        "start": 0,
        "end": 36
    },
    "caused_by": {
        "type": "null_pointer_exception",
        "reason": null
    }
},
"status": 400

}

I don't know what could be the error, since I do pass my params and they are inside the "script" object. Does anyone have an idea of what could be wrong?

Thank you very much in advance!

Are you sure that your document fdfsfsfs-058f-437d-bc52-473808ba61c2 has a field called addresses which is not null? — Val
– Val, Commented Aug 3, 2021 at 14:01
How many documents match your query? I bet there are more than one because you're using match instead of term? — Val
– Val, Commented Aug 3, 2021 at 14:11
You are right @Val! Thank you very much! Switching to "term" solved my problem. — Savas P
– Savas P, Commented Aug 3, 2021 at 14:17

Val · Accepted Answer · 2021-08-03 14:20:00Z

1

I think that the match query actually matches several documents and one of them doesn't have any field called addresses.

You probably need to change to a term query in order to do an exact match and only select the single document that you would like to update.

answered Aug 3, 2021 at 14:20

Val

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