Stalled

Storage Plain v101 → current

Indicates GRANDPA has stalled with (delay, best_finalized_block).

Queried by: validatorsdevelopers

The Big Picture

When note_stalled is called, this storage records the stall. Contains the delay before forced change takes effect and the last finalized block. Presence indicates emergency recovery is in progress.

Use Cases

Check if finality is stalled
Monitor for consensus failures
Build alerting systems for finality issues

From Chain Metadata

`true` if we are currently stalled.

Purpose & Usage

Purpose

Records stall conditions for scheduled forced authority changes.

Common Query Patterns

Single value query (None if not stalled)

Stored Value

(u32, u32)

value ((u32, u32))

Relationships

Modified By

note_stalled

Code Examples

import { ApiPromise, WsProvider } from "@polkadot/api";
import { stringCamelCase } from "@polkadot/util";

const provider = new WsProvider("wss://entrypoint-finney.opentensor.ai:443");
const api = await ApiPromise.create({ provider });

// Query Stalled storage (no keys - plain value)
const result = await api.query
  [stringCamelCase("Grandpa")]
  [stringCamelCase("Stalled")]();
console.log("Stalled:", result.toHuman());

Runtime Info

Pallet: Grandpa
Storage Kind: Plain
First Version: v101
Current Version: v393

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