Sort processor
The Sort processor sorts the elements of an array field in ascending or descending order.
To sort an array field:
- Select Create → Create processor.
- Select Sort from the Processor menu.
- Set the Source Field to the array field you want to sort.
- Set Order to Ascending or Descending. Defaults to Ascending.
- (Optional) Set Target field to write the sorted array to a different field. Leave empty to update the Source Field.
This functionality uses the Elasticsearch Sort processor internally, but you configure it in Streamlang. Streamlang doesn't always have 1:1 parity with the ingest processor options and behavior. Refer to Processor limitations and inconsistencies.
In YAML mode, configure the sort processor using the following parameters. For the complete Streamlang syntax, refer to the Streamlang reference.
| Parameter | Type | Required | Description |
|---|---|---|---|
from |
string | Yes | Array field to sort. |
to |
string | No | Target field for the sorted array. Defaults to the source field. |
order |
string | No | Sort order: asc or desc. Defaults to asc. |
ignore_missing |
boolean | No | When true, skip this processor if the source field is missing. |
- action: sort
from: attributes.tags
order: desc
Given a document with attributes.tags set to ["charlie", "alpha", "bravo"], the processor updates the field to ["charlie", "bravo", "alpha"].