Drop fields

The drop-fields transform function drops fields of structured data (Currently only AVRO is supported).
The cast transform function transforms the data to a target compatible schema.

The step name is drop-field, and the UserConfig is controlled here: {"steps": [{"type": "drop-fields", "fields": "password,other"}]}.

Parameters:

Parameter Description

Parameter	Description
fields	A comma-separated list of fields to drop.
part	when used with KeyValue data, defines if the transform function is done on the `key` or on the `value`. If `null` or absent the transform function applies to both the key and the value.

fields

A comma-separated list of fields to drop.

part

when used with KeyValue data, defines if the transform function is done on the key or on the value. If null or absent the transform function applies to both the key and the value.

Example

Produce an AVRO message with the payload: {name: value1, password: value2}.
- AVRO
- Result
{"name": "value1", "password": "value2"}
{"name": "value1"}
The function drops the fields specified in the fields parameter, and outputs {"{name: value1}"} to the output topic.

What’s next?

For more, see Transform Functions or the Pulsar documentation.