Rosetta fails to retrieve some blocks

[emmanuelm41]

Summary of Bug

Rosetta is failing to retrieve some blocks with some nasty errors. On height 9773304 for example.

Version

• Cosmos SDK v0.45.1
• Gaia v6.0.0

Steps to Reproduce

• Start a node and fully sync it on cosmoshub-4 with the following command gaiad start --home /data --x-crisis-skip-assert-invariants
• Start rosetta with the following command simd rosetta --blockchain Cosmos --network cosmoshub-4 --grpc cosmos-node-srv:9090 --tendermint cosmos-node-srv:26657 --log_level trace --trace

Working request

{
    "network_identifier": 
        {
            "blockchain": "{{blockchain}}",
            "network": "{{network}}"
        },
    "block_identifier": {
        "index": 8000021
    }
}

{
    "block": {
        "block_identifier": {
            "index": 8000021,
            "hash": "D92CBFDD315BE2A2A7D24E5D1D1E8FF332BE10F00FF1206C589F6F468B19F972"
        },
        "parent_block_identifier": {
            "index": 8000020,
            "hash": "3575813AB4A5F45D21FE759AC4AF523C4A034F00822D795E5686776C6AFA577E"
        },
        "timestamp": 1634191683505,
        "transactions": [
            {
                "transaction_identifier": {
                    "hash": "01D92CBFDD315BE2A2A7D24E5D1D1E8FF332BE10F00FF1206C589F6F468B19F972"
                },
                "operations": []
            },
            {
                "transaction_identifier": {
                    "hash": "FCA128EC46CF97F43DE04869C442FF2BB9E2561F5109E8FBC68858565965FB46"
                },
                "operations": [
                    {
                        "operation_identifier": {
                            "index": 0
                        },
                        "type": "/cosmos.distribution.v1beta1.MsgWithdrawDelegatorReward",
                        "status": "Success",
                        "account": {
                            "address": "cosmos1c9xj5vju9as5xygr2trma6e7dc7d0cye9ljuej"
                        },
                        "metadata": {
                            "delegator_address": "cosmos1c9xj5vju9as5xygr2trma6e7dc7d0cye9ljuej",
                            "validator_address": "cosmosvaloper1tflk30mq5vgqjdly92kkhhq3raev2hnz6eete3"
                        }
                    }
                ]
            },
            {
                "transaction_identifier": {
                    "hash": "00D92CBFDD315BE2A2A7D24E5D1D1E8FF332BE10F00FF1206C589F6F468B19F972"
                },
                "operations": []
            }
        ]
    }
}

Error 1

• Use the following body to send a request using postman for example:

{
    "network_identifier": 
        {
            "blockchain": "{{blockchain}}",
            "network": "{{network}}"
        },
    "block_identifier": {
        "index": 9773304
    }
}

• The error I get is

{
    "code": 3,
    "message": "encode/decode error",
    "description": "returned when there are errors encoding or decoding information to and from the node",
    "retriable": true,
    "details": {
        "info": "unable to resolve type URL /ibc.core.client.v1.MsgUpdateClient: tx parse error"
    }
}

Error 2

• Use the following body to send a request using postman for example:

{
    "network_identifier": 
        {
            "blockchain": "{{blockchain}}",
            "network": "{{network}}"
        },
    "block_identifier": {
        "index": 4000000
    }
}
____

• The error I get is

{
    "code": 0,
    "message": "unknown",
    "description": "unknown error",
    "retriable": false,
    "details": {
        "info": "rosetta: (0) unknown"
    }
}

For Admin Use

• Not duplicate issue
• Appropriate labels applied
• Appropriate contributors tagged
• Contributor assigned/self-assigned

[raynaudoe]

I've found not the source of these errors but how rosetta is masking inner errors, thus getting something generic like this:

{
    "code": 0,
    "message": "unknown",
    "description": "unknown error",
    "retriable": false,
    "details": {
        "info": "rosetta: (0) unknown"
    }
}

The fix for getting the actual error message would be done in Zondax's fork .

As for the error while querying a block, I wasn't able to reproduce it with the actual codebase, most likely it was already fixed (fork). This kind of errors will be easily catched when rosetta-cli test can be run on CI