OpenSearch raise mapper_parsing_exception

[wchaws]

Error message

ERROR REASON {'type': 'mapper_parsing_exception', 'reason': 'object mapping for [response.data] tried to parse field [data] as object, but found a concrete value'}

Root cause

This is caused by response data schema vary. For example, the response data could be like the following

Schema 1

{
    "response": {
        "data": {
            "status": 200,
            "payload": "hello"
        }
    }
}

Schema 2

{
    "response": {
        "data": "message"
    }
}

If OpenSearch received schema 1 firstly, the OpenSearch will expect the following data's response.data to be a object type. However if OpenSearch received schema 2 in the following data, it will encounter an error.

Solution

Do not index the response.data field by enabled: false, in the index template setting like below.

{
    "response": {
        "properties": {
            "data": {
                "type": "object",
                "enabled": false
            }
        }
    }
}