Test script to demonstrate strange behavior of script_fields of array

script_field_array_error.sh

# delete index if exists
curl -XDELETE localhost:9200/test/
 
# create index with default settings
curl -XPOST localhost:9200/test/
 
# create mapping
curl -XPUT localhost:9200/test/user/_mapping -d '
{
  "user": {
    "properties": {
      "id": {
        "type": "string",
        "index": "not_analyzed"
      },
      "other_ids": {
        "type": "string",
        "index": "not_analyzed"
      }
    }
  }
}
'

# add some data
curl -XPUT localhost:9200/test/user/id1 -d '
{
  "id": "id1",
  "other_ids": [
    "id2",
    "id3"
  ]
}
'

curl -XPUT localhost:9200/test/user/id2 -d '
{
  "id": "id2",
  "other_ids": [
    "id1"
  ]
}
'

curl -XPUT localhost:9200/test/user/id3 -d '
{
  "id": "id3",
  "other_ids": [
    "id1",
    "id2"
  ]
}
'

# Query: test array values from script_fields
curl -XGET 'localhost:9200/test/user/_search?pretty=1'  -d '
{
  "fields": [
    "_source"
  ],
  "query": {
    "match_all": {}
  },
  "script_fields": {
    "other_id_script": {
      "lang": "groovy",
      "script": "doc[\"other_ids\"].values"
    }
  }
}
'