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WARNING: Version 6.0 of Elasticsearch has passed its EOL date.

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Elastic Docs ›Elasticsearch Reference [6.0] ›Ingest Node ›Processors

Append Processor

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Append Processor

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Appends one or more values to an existing array if the field already exists and it is an array. Converts a scalar to an array and appends one or more values to it if the field exists and it is a scalar. Creates an array containing the provided values if the field doesn’t exist. Accepts a single value or an array of values.

Table 14. Append Options

Name Required Default Description

field

yes

-

The field to be appended to

value

yes

-

The value to be appended

 
{
  "append": {
    "field": "field1",
    "value": ["item2", "item3", "item4"]
  }
}
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