Ingest pipeline - How to stores the split values into separate new fields?

[chanakagl (chanaka liyanarachchi)]

How to stores the split values (using split processor) into three new fields?
here is my pipeline but need to store split values to separate 3 fields. I have tried set array list on target_field parameter but look likes it's not supporting. Can someone pls help?

PUT _ingest/pipeline/split_act_scene_line
{
"description": "split words on line_number field",
"processors": [
{
"split": {
"field": "line_number",
"separator": "\.+",
"target_field": ["field1", "filed2", "filed3"]
}
}
]
}

ex:- "_source": {
"line_number": "1.2.3"
}

[abdon (Abdon Pijpelink)]

I don't think this is possible with just the split processor. Instead, you can first split into a temporary field, and then next use three set processors to assign the different array elements to the different fields:

POST _ingest/pipeline/_simulate
{
  "pipeline": {
    "description": "split words on line_number field",
    "processors": [
      {
        "split": {
          "field": "line_number",
          "separator": "\\.+",
          "target_field": "temporary_field"
        }
      },
      {
        "set": {
          "field": "field1",
          "value": "{{temporary_field.0}}"
        }
      },
      {
        "set": {
          "field": "field2",
          "value": "{{temporary_field.1}}"
        }
      },
      {
        "set": {
          "field": "field3",
          "value": "{{temporary_field.2}}"
        }
      },
      {
        "remove": {
          "field": "temporary_field"
        }
      }
    ]
  },
  "docs": [
    {
      "_source": {
        "line_number": "1.2.3"
      }
    }
  ]
}

[chanakagl (chanaka liyanarachchi)]

It worked. @abdon Thank you very much..!