{"record":{"id":"e3eb4dd77d94f14e","repo":"dbt-labs/dbt-core","slug":"from-config-failed-to-serialized-describematerial","errorCode":null,"errorMessage":"from_config: Failed to serialized DescribeMaterializedViewResults: {e}","messagePattern":"from_config: Failed to serialized DescribeMaterializedViewResults: (.+?)","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"crates/dbt-adapter/src/relation/relation_impl.rs","lineNumber":1245,"sourceCode":"        Ok(max_identifier_length(self.adapter_type)\n            .map(|v| v.get().try_into().unwrap_or(u32::MAX))\n            .unwrap_or(u32::MAX))\n    }\n\n    fn materialized_view_config_changeset(\n        &self,\n        remote_state_value: &Value,\n        local_config_value: &Value,\n    ) -> Result<Value, minijinja::Error> {\n        use AdapterType::*;\n        match self.adapter_type {\n            // FIXME(serramatutu): port over to RelationConfig v2\n            Redshift => {\n                let remote_state = DescribeMaterializedViewResults::try_from(\n                    remote_state_value,\n                    )\n                    .map_err(|e| {\n                        minijinja::Error::new(\n                            minijinja::ErrorKind::SerdeDeserializeError,\n                            format!(\n                                \"from_config: Failed to serialized DescribeMaterializedViewResults: {e}\"\n                            )\n                        )\n                    })?;\n\n                let remote_state = RedshiftMaterializedViewConfig::try_from(remote_state)\n                    .map_err(|e| {\n                        minijinja::Error::new(\n                            minijinja::ErrorKind::SerdeDeserializeError,\n                            format!(\n                                \"materialized_view_config_changeset: Failed to deserialize RedshiftMaterializedViewConfig: {e}\"\n                            ),\n                        )\n                    })?;\n\n                let local_config = node_value_to_redshift_materialized_view(local_config_value)?;","sourceCodeStart":1227,"sourceCodeEnd":1263,"githubUrl":"https://github.com/dbt-labs/dbt-core/blob/0267ce9170576975b76b64ce856b2e5848e96617/crates/dbt-adapter/src/relation/relation_impl.rs#L1227-L1263","documentation":"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.","triggerScenarios":"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).","commonSituations":"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.","solutions":["Inspect the nested error to find which field failed conversion and fix the remote_state payload.","Ensure remote_state is the RelationConfig/describe-results object produced by the current adapter version, not a hand-built dict.","Refresh stale cached state by re-running the describe and rebuilding the changeset.","Upgrade the adapter so the state schema matches the DescribeMaterializedViewResults struct."],"exampleFix":null,"handlingStrategy":"validation","validationCode":"# Before computing changeset, ensure remote state came from the current adapter\nif remote_state is None or not hasattr(remote_state, 'to_value'):\n    raise Exception('remote_state must come from a Redshift describe call')","typeGuard":"fn is_valid_mv_state(v: &Value) -> bool {\n    DescribeMaterializedViewResults::try_from(v.clone()).is_ok()\n}","tryCatchPattern":"match DescribeMaterializedViewResults::try_from(remote_state_value) {\n    Ok(s) => proceed(s),\n    Err(e) => { re_describe(relation); retry_changeset(); }\n}","preventionTips":["Always obtain remote state from the adapter's describe API in the same run","Avoid persisting/reusing stale state across version upgrades","Log nested serde errors to locate the malformed field"],"tags":["redshift","serde","deserialization","materialized-view"],"backgroundTag":"schema-validation-failed","analyzedSha":"0267ce9170576975b76b64ce856b2e5848e96617","analyzedAt":"2026-09-07T21:53:39.732Z","contentChangedAt":"2026-09-07T21:53:39.732Z","schemaVersion":2},"datasetVersion":"2026-09-17T15:17:12.973Z"}