Splunk® Data Stream Processor

Function Reference

On April 3, 2023, Splunk Data Stream Processor reached its end of sale, and will reach its end of life on February 28, 2025. If you are an existing DSP customer, please reach out to your account team for more information.

All DSP releases prior to DSP 1.4.0 use Gravity, a Kubernetes orchestrator, which has been announced end-of-life. We have replaced Gravity with an alternative component in DSP 1.4.0. Therefore, we will no longer provide support for versions of DSP prior to DSP 1.4.0 after July 1, 2023. We advise all of our customers to upgrade to DSP 1.4.0 in order to continue to receive full product support from Splunk.


This topic describes how to use the function in the .


The Fields function keeps or removes fields from your data based on the field list criteria.

Function Input/Output Schema

Function Input
This function takes in collections of records with schema R.
Function Output
This function outputs the same collection of records but with a different schema S.


The required fields are in bold font.

fields [+|-] <field_list>

Required arguments

Syntax: <field>, <field>, ...
Description: Comma-delimited list of fields to keep or remove. You can use a wild card character in the field names, but must enclose those field names in single quotation marks.
Example in Canvas View: host, source, body

Optional arguments

Syntax: + | -
Description: If the plus sign ( + ) is specified, only the fields in the field_list are kept in the results. If the minus sign ( - ) is specified, the fields in the field_list are removed from the results. The symbol you specify applies to all of the fields in the field_list.
Default: +
Example in Canvas View: -


Examples of common use cases follow. These examples assume that you have added the function to your pipeline.

1. SPL2 Example: Specify a list of fields to keep in your records

This example assumes that you are in the SPL View.

Return only the host, source, and body fields.

... | fields host, source, body | ...

2. SPL2 Example: Specify a list of fields to remove from your records

This example assumes that you are in the SPL View.

Use the minus sign ( - ) to specify which fields to remove from your incoming records. This example removes the host field from the records:

... | fields - host | ...
Last modified on 09 February, 2022
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This documentation applies to the following versions of Splunk® Data Stream Processor: 1.1.0, 1.2.0, 1.2.1-patch02, 1.2.1, 1.2.2-patch02, 1.2.4, 1.2.5, 1.3.0, 1.3.1, 1.4.0, 1.4.1, 1.4.2, 1.4.3, 1.4.4

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