Delete Fields

Overview

The Delete Fields processor removes selected fields from telemetry records.

Supported types: Logs · Metrics · Traces

Use the same field type and field path model as for logs (body, attribute, resource). Rule builders in the UI expose signal-appropriate attribute paths when you configure conditions for metrics or traces.

Configuration

Parameter	Type	Default	Required	Description
ottl_expression	string	none	No	OTTL expression used to conditionally apply the field deletion.

Rules

When building the ottl_expression, the UI exposes rule-based conditions.

Attributes

Parameter	Type	Description
Attribute Key	string	The attribute key to evaluate. Supported values: `attribute`; `resource`; `log`; `span`; `metric` (fields: `aggregation_temporality`; `description`; `is_monotonic`; `name`; `type`; `unit`); `datapoint` (fields: `count`; `negative.offset`; `positive.offset`; `scale`; `sum`; `value_double`; `value_int`; `zero_count`)
Operator	string	The operator to use for comparison. Supported values: `equals`; `not equals`; `starts with`; `ends with`; `contains`; `regex`; `==`; `!=`; `<`; `>`; `>=`; `<=`; `is boolean`; `is integer`; `is double`; `is map`; `is string`; `exists`; `not exists`
Value	string	The value to compare against

Note: Multiple rules can be combined in the UI using logical operators such as AND or OR, and the resulting rule set is converted into the final ottl_expression.

Fields To Delete

Each item in fields defines one field to delete.

Parameter	Type	Default	Required	Description
field_type	string	none	Yes	Field type to delete from. Allowed values: `body` `attribute` `resource`.
field	string	none	Yes	Field key or path to delete.

Example Configuration

{
  "ottl_expression": "", // default: none
  "fields": [
    // required
    {
      "field_type": "attribute", // required, default: none
      "field": "", // required, default: none
    },
  ],
}

Overview​

Configuration​

Rules​

Attributes​

Fields To Delete​

Example Configuration​