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polkadot-js / api

Promise and RxJS APIs around Polkadot and Substrate based chains via RPC calls. It is dynamically generated based on what the Substrate runtime provides in terms of metadata.
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Failed to decode Kusama block #7487667 #3535

Closed emostov closed 3 years ago

emostov commented 3 years ago

Running with @polkadot/api@4.9.3-23

    const api = await ApiPromise.create({
        provider: new WsProvider('wss://kusama.api.onfinality.io/public-ws'),
    });

    const blockHash7487667 = await api.rpc.chain.getBlockHash(7487667);
    const block7487667 = await api.rpc.chain.getBlock(blockHash7487667);

Results in 

2021-05-15 23:52:27             VEC: Unable to decode on index 2 createType(ExtrinsicV4):: createType(Call):: Call: failed decoding electionProviderMultiPhase.submitUnsigned:: Struct: failed on args: {"solution":"RawSolution","witness":"SolutionOrSnapshotSize"}:: u32: Input too large. Found input with 77 bits, expected 32
2021-05-15 23:52:27        RPC-CORE: getBlock(hash?: BlockHash): SignedBlock:: createType(SignedBlock):: Struct: failed on block: {"header":"Header","extrinsics":"Vec<Extrinsic>"}:: Struct: failed on extrinsics: Vec<Extrinsic>:: createType(ExtrinsicV4):: createType(Call):: Call: failed decoding electionProviderMultiPhase.submitUnsigned:: Struct: failed on args: {"solution":"RawSolution","witness":"SolutionOrSnapshotSize"}:: u32: Input too large. Found input with 77 bits, expected 32
Error: createType(SignedBlock):: Struct: failed on block: {"header":"Header","extrinsics":"Vec<Extrinsic>"}:: Struct: failed on extrinsics: Vec<Extrinsic>:: createType(ExtrinsicV4):: createType(Call):: Call: failed decoding electionProviderMultiPhase.submitUnsigned:: Struct: failed on args: {"solution":"RawSolution","witness":"SolutionOrSnapshotSize"}:: u32: Input too large. Found input with 77 bits, expected 32
    at createTypeUnsafe (/Users/zeke/Documents/parity/tools-sandbox/node_modules/@polkadot/types/create/createType.cjs:55:11)
    at RpcCore._formatOutput (/Users/zeke/Documents/parity/tools-sandbox/node_modules/@polkadot/rpc-core/index.cjs:381:41)
    at callWithRegistry (/Users/zeke/Documents/parity/tools-sandbox/node_modules/@polkadot/rpc-core/index.cjs:247:42)
    at processTicksAndRejections (node:internal/process/task_queues:93:5)

(electionprovidermultiphase.submitUnsigned extrinsic on subscan: https://kusama.subscan.io/extrinsic/7487667-2)

emostov commented 3 years ago

The issue is also reproducible on Kusama block #7491223

jacogr commented 3 years ago

Honestly don’t know. Looked at those types this week and they seemed sane compare to Substrate. So another pair of eyes appreciated.

Will take a look later again.

jacogr commented 3 years ago

@arjanz Figured it out... it is related to the bump to 24 nominators, there are now 8 extra entries in the struct.

polkadot-js-bot commented 3 years ago

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue if you think you have a related problem or query.