dbt-labs/dbt-core · error

from_config: Failed to serialized…

Error message

from_config: Failed to serialized DescribeMaterializedViewResults: {e}

What it means

In the materialized-view config changeset path, the Redshift branch converts a minijinja value into DescribeMaterializedViewResults via try_from. Failure produces this SerdeDeserializeError message (note: the message says "serialized" but it is a deserialization failure). It means the remote_state value does not match the structure of Redshift's DESCRIBE MATERIALIZED VIEW output model.

Solutions

1. Inspect the nested error to find which field failed conversion and fix the remote_state payload.
2. Ensure remote_state is the RelationConfig/describe-results object produced by the current adapter version, not a hand-built dict.
3. Refresh stale cached state by re-running the describe and rebuilding the changeset.
4. Upgrade the adapter so the state schema matches the DescribeMaterializedViewResults struct.

# Before computing changeset, ensure remote state came from the current adapter
if remote_state is None or not hasattr(remote_state, 'to_value'):
    raise Exception('remote_state must come from a Redshift describe call')

fn is_valid_mv_state(v: &Value) -> bool {
    DescribeMaterializedViewResults::try_from(v.clone()).is_ok()
}

match DescribeMaterializedViewResults::try_from(remote_state_value) {
    Ok(s) => proceed(s),
    Err(e) => { re_describe(relation); retry_changeset(); }
}

When it happens

Trigger: Passing remote_state_value from a Redshift materialized view describe call whose fields do not conform to DescribeMaterializedViewResults (missing keys, wrong types, or a value of the wrong kind entirely).

Common situations: Caching/stale remote state dicts from older dbt runs, adapter/schema version mismatch after upgrade, or macros passing the raw query result instead of the wrapped relation config object.

Understand the failure class

Background: Schema validation failed / invalid input schema: payload rejected because its shape doesn't match the expected schema — this error's family across 28 libraries.

Related errors

• materialized_view_config_changeset: Failed to deserialize…
• {e}
• Failed to deserialize InternalDbtNodeWrapper
• get_seed_file_path: Failed to deserialize DbtSeed
• get_table_options: Failed to deserialize config

AI-assisted analysis of dbt-labs/dbt-core@0267ce9170 (2026-09-07). Data as JSON: /api/errors/e3eb4dd77d94f14e. Report an issue: GitHub.

Appendix: source

Thrown at crates/dbt-adapter/src/relation/relation_impl.rs:1245

        Ok(max_identifier_length(self.adapter_type)
            .map(|v| v.get().try_into().unwrap_or(u32::MAX))
            .unwrap_or(u32::MAX))
    }

    fn materialized_view_config_changeset(
        &self,
        remote_state_value: &Value,
        local_config_value: &Value,
    ) -> Result<Value, minijinja::Error> {
        use AdapterType::*;
        match self.adapter_type {
            // FIXME(serramatutu): port over to RelationConfig v2
            Redshift => {
                let remote_state = DescribeMaterializedViewResults::try_from(
                    remote_state_value,
                    )
                    .map_err(|e| {
                        minijinja::Error::new(
                            minijinja::ErrorKind::SerdeDeserializeError,
                            format!(
                                "from_config: Failed to serialized DescribeMaterializedViewResults: {e}"
                            )
                        )
                    })?;

                let remote_state = RedshiftMaterializedViewConfig::try_from(remote_state)
                    .map_err(|e| {
                        minijinja::Error::new(
                            minijinja::ErrorKind::SerdeDeserializeError,
                            format!(
                                "materialized_view_config_changeset: Failed to deserialize RedshiftMaterializedViewConfig: {e}"
                            ),
                        )
                    })?;

                let local_config = node_value_to_redshift_materialized_view(local_config_value)?;

View on GitHub (pinned to 0267ce9170)