How to get source size using script?

Elastic Stack Elasticsearch
1

I'm using Elasticsearch 1.3 and I need to return the source size in a query (I have _source enabled)

I tried with this query:

{
  "query": {
    "match_all" : {}
  },
  "script_fields": {
    "source_size": {
      "script": "_source.toString().length()"
    }
  }
}

But source_size always returns 53.

Then I realized that _source.toString() returns the string "org.elasticsearch.search.lookup.SourceLookup@30e2f99b"

How can I get the json string so that I can get its size? Or any other script code to get the source size (in bytes or string length, I just need to find very big documents)?

2

The exact same code worked by using groovy as script lang

3

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