Stalled

Storage Plain v101 → v411 Changed in v411

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)

.0
delay — Delay (in blocks) for the GRANDPA stall: how long the protocol should wait before attempting recovery. Standard pallet_grandpa storage.
.1
best_finalized_block_number — Best finalized block number at the point of the stall — the reference block from which the delay is counted. Standard pallet_grandpa storage.

Relationships

Modified By

note_stalled

Code Examples

import { createClient, Binary } from "polkadot-api";
import { getWsProvider } from "polkadot-api/ws";
import { sub } from "@polkadot-api/descriptors"; // generated by: npx papi add sub -w wss://entrypoint-finney.opentensor.ai:443

const client = createClient(getWsProvider("wss://entrypoint-finney.opentensor.ai:443"));
const api = client.getTypedApi(sub);

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

Version History

Version:

v101 block 1 Added

v120 block 315,568 Internal re-bind

v121 block 518,345 Internal re-bind

v123 block 720,235 Internal re-bind

v128–v132 · runtime versions skipped on chain (never deployed)

v133 block 1,404,224 Internal re-bind

v149 block 3,014,339 Internal re-bind

v151 block 3,157,274 Internal re-bind

v166–v194 · runtime versions skipped on chain (never deployed)

v195 block 3,791,350 Internal re-bind

v203–v204 · runtime versions skipped on chain (never deployed)

v205 block 4,209,446 Internal re-bind

v213–v215 · runtime versions skipped on chain (never deployed)

v216 block 4,510,996 Internal re-bind

v259–v260 · runtime versions skipped on chain (never deployed)

v261 block 5,328,895 Internal re-bind

v278–v289 · runtime versions skipped on chain (never deployed)

v290 block 5,947,548 Internal re-bind

v307–v314 · runtime versions skipped on chain (never deployed)

v315 block 6,414,634 Internal re-bind

v327–v333 · runtime versions skipped on chain (never deployed)

v334 block 6,811,690 Internal re-bind

v353–v360 · runtime versions skipped on chain (never deployed)

v361 block 7,063,679 Internal re-bind

v403–v410 · runtime versions skipped on chain (never deployed)

v411 block 8,283,784 Internal re-bind Current

Runtime Info

Pallet: Grandpa
Storage Kind: Plain
First Version: v101
Current Version: v411

Back to Grandpa Storage