Elasticsearch: Accessing IndexedScript in aggregation

Question

ES offers the possibility to store your script within an internal index ( see IndexedScript ), but unfortunately I cannot access it from aggreagtions.

Creating the index:

POST /_scripts/groovy/termFrequency
{
  "script": "_index['textBody'][term].tf()"
}

Using the script within aggreagtions:

GET /my_index/_search
{
   "query":{
      "match_all": {}
   },
   "aggs":{
      "tf_sum":{
        "sum":{
          "script": {
            "script": "termFrequency",
            "lang": "groovy",
            "params": {"term":"keyword"}
          }
        }
      }
   }
}

results in the syntax-error: Parse Failure [Unexpected token START_OBJECT in [tf_sum].

The purpose of the script is, to extract the term frequencies. I don't want to use script_files, because uploading such files is expensive in cloud services (e.g. found).

What version of ES you are using?

ChintanShah25
– ChintanShah25

2015-12-22 15:08:23 +00:00
Commented Dec 22, 2015 at 15:08 — ChintanShah25
– ChintanShah25, Commented Dec 22, 2015 at 15:08

ChintanShah25 · Accepted Answer · 2015-12-22 22:45:31Z

1

This is the correct syntax for ES 1.7, you were looking at ES 2.1

GET /my_index/_search
{
  "query": {
    "match_all": {}
  },
  "aggs": {
    "tf_sum": {
      "sum": {
        "script_id": "termFrequency", <--- you access it with script_id
        "lang": "groovy",
        "params": {
          "term": "keyword"
        }
      }
    }
  },
  "size": 0
}

Hope this helps!

answered Dec 22, 2015 at 22:45

ChintanShah25

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1 Comment

boraas Over a year ago

thank you, i got confused with different versions of ES.

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