ElasticSearch [script] unknown field [file], parser not found

Question

I used script_score to customize the scoring:

GET /customer/_search
{
    "query": {
        "function_score": {
            "query": {
                "match": {
                    "name": "Mark"
                }
            },
            "script_score": {
              "script": {
                "lang": "painless",
                "file": "test"
              }
            }
        }
    }
}

I set "file": "test", and put test.groovy file in config/scripts directory, but I got these error:

{
  "error": {
    "root_cause": [
      {
        "type": "illegal_argument_exception",
        "reason": "[script] unknown field [file], parser not found"
      }
    ],
    "type": "illegal_argument_exception",
    "reason": "[script] unknown field [file], parser not found"
  },
  "status": 400
}

[script] unknown field [file], parser not found! Why? Should I need to install some plugins?

Elasticsearch version : 6.2.3

Plugins installed: None

JVM version : 1.8.0_181

OS version: Ubuntu Linux 4.4.0-124-generic

Val · Accepted Answer · 2018-08-16 03:51:15Z

2

File scripts have been removed in ES 6.0, you should now use stored scripts instead.

You can easily migrate your Groovy script to Painless.

First, store your script:

POST _scripts/test
{
  "script": {
    "lang": "painless",
    "source": "Math.log(_score * 2)"
  }
}

Then use it in your query:

GET /customer/_search
{
    "query": {
        "function_score": {
            "query": {
                "match": {
                    "name": "Mark"
                }
            },
            "script_score": {
              "script": {
                "id": "test"
              }
            }
        }
    }
}

answered Aug 16, 2018 at 3:51

Val

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2 Comments

SunnyMarkLiu Over a year ago

I want to do some complicated strategy to calculate the score, can I store the script code to a file?

Val Over a year ago

you can store it in a file, but ultimately you'll need to store it in ES using the _scripts endpoint

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