Implementation:Apache Druid OverlordDynamicConfigDialog

Knowledge Sources	Apache_Druid
Domains	Web_Console, Overlord_Configuration
Last Updated	2026-02-10 10:00 GMT

Overview

OverlordDynamicConfigDialog is a React dialog component that allows editing the Druid Overlord dynamic configuration at runtime with form and JSON editing modes.

Description

The OverlordDynamicConfigDialog component loads the current Overlord dynamic configuration from the /druid/indexer/v1/worker API endpoint and presents it in a SnitchDialog wrapper that provides audit trail functionality. Users can edit the configuration using either an AutoForm with predefined OVERLORD_DYNAMIC_CONFIG_FIELDS or a raw JSON editor with OVERLORD_DYNAMIC_CONFIG_COMPLETIONS for autocomplete. The dialog also loads configuration history for review. On save, it posts the updated config with X-Druid-Author and X-Druid-Comment headers for audit tracking.

Usage

Used from the services or cluster management view when an administrator needs to modify Overlord task assignment strategies, auto-scaling settings, or other dynamic configuration parameters.

Code Reference

Source Location

Repository: Apache Druid
File: web-console/src/dialogs/overlord-dynamic-config-dialog/overlord-dynamic-config-dialog.tsx
Lines: 1-144

Signature

export interface OverlordDynamicConfigDialogProps {
  onClose(): void;
}

export const OverlordDynamicConfigDialog = React.memo(function OverlordDynamicConfigDialog(
  props: OverlordDynamicConfigDialogProps,
): JSX.Element;

Import

import { OverlordDynamicConfigDialog } from 'web-console/src/dialogs/overlord-dynamic-config-dialog/overlord-dynamic-config-dialog';

I/O Contract

Inputs

Name	Type	Required	Description
onClose	() => void	Yes	Callback invoked when the dialog is closed (after save or cancel)

Outputs

Name	Type	Description
rendered dialog	JSX.Element	A SnitchDialog wrapping a form/JSON editor for the Overlord dynamic config, with history viewing capability and audit comment on save

Usage Examples

Opening the Config Dialog

<OverlordDynamicConfigDialog
  onClose={() => setShowOverlordConfig(false)}
/>

Related Pages

Environment:Apache_Druid_Web_Console_Development

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