Split Processor | Elasticsearch Reference [6.3]

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Split Processoredit

Splits a field into an array using a separator character. Only works on string fields.

Table 31. Split Options

Name	Required	Default	Description
`field`	yes	-	The field to split
`separator`	yes	-	A regex which matches the separator, eg `,` or `\s+`
`target_field`	no	`field`	The field to assign the split value to, by default `field` is updated in-place
`ignore_missing`	no	`false`	If `true` and `field` does not exist, the processor quietly exits without modifying the document

{
  "split": {
    "field": "my_field",
    "separator": "\\s+" 
  }
}

Treat all consecutive whitespace characters as a single separator