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[8.4] [Docs] Update remove processor with 'keep' option (#92836) #92840

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13 changes: 13 additions & 0 deletions docs/reference/ingest/processors/remove.asciidoc
Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,7 @@ Removes existing fields. If one field doesn't exist, an exception will be thrown
| Name | Required | Default | Description
| `field` | yes | - | Fields to be removed. Supports <<template-snippets,template snippets>>.
| `ignore_missing` | no | `false` | If `true` and `field` does not exist or is `null`, the processor quietly exits without modifying the document
| `keep` | no | - | Fields to be kept. When set, all fields other than those specified are removed.
include::common-options.asciidoc[]
|======

Expand All @@ -39,3 +40,15 @@ To remove multiple fields, you can use the following query:
}
--------------------------------------------------
// NOTCONSOLE

You can also choose to remove all fields other than a specified list:

[source,js]
--------------------------------------------------
{
"remove": {
"keep": ["url"]
}
}
--------------------------------------------------
// NOTCONSOLE