Rename Processor | Elasticsearch Reference [5.1]

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Rename Processoredit

Renames an existing field. If the field doesn’t exist or the new name is already used, an exception will be thrown.

Table 26. Rename Options

Name	Required	Default	Description
`field`	yes	-	The field to be renamed
`target_field`	yes	-	The new name of the field
`ignore_missing`	no	`false`	If `true` and `field` does not exist, the processor quietly exits without modifying the document

{
  "rename": {
    "field": "foo",
    "target_field": "foobar"
  }
}