risingwavelabs/risingwave · error · MetaError

Metadata model error: {0}

Error message

Metadata model error: {0}

What it means

MetaError::MetadataModelError wraps the metadata model crate's errors (metadata storage/model-layer failures such as constraint violations or catalog model inconsistencies) into the unified meta error enum, formatted as 'Metadata model error: {inner}'. It indicates the error originated in the metadata model layer, not in gRPC or storage.

Source

Thrown at src/meta/src/error.rs:45

use crate::hummock::error::Error as HummockError;
use crate::model::MetadataModelError;

pub type MetaResult<T> = std::result::Result<T, MetaError>;

// TODO(error-handling): provide more concrete error code for different object types.
#[derive(
    thiserror::Error,
    thiserror_ext::ReportDebug,
    thiserror_ext::Arc,
    thiserror_ext::Construct,
    thiserror_ext::Macro,
)]
#[thiserror_ext(
    newtype(name = MetaError, backtrace, extra_provide = Self::provide_postgres_error_code),
    macro(path = "crate::error")
)]
pub enum MetaErrorInner {
    #[error("Metadata model error: {0}")]
    MetadataModelError(
        #[from]
        #[backtrace]
        MetadataModelError,
    ),

    #[error("Hummock error: {0}")]
    HummockError(
        #[from]
        #[backtrace]
        HummockError,
    ),

    #[error(transparent)]
    RpcError(
        #[from]
        #[backtrace]
        RpcError,

View on GitHub (pinned to 6469eb736d)

Solutions

1. Read the wrapped inner message in the error chain for the concrete model-layer cause.
2. Check meta node logs and the metadata store's state around the failing operation.
3. Retry the DDL/statement if the cause was a transient conflict; otherwise fix the conflicting catalog object (e.g. drop/recreate).
4. If reproducible, report with the full error chain — it may indicate a meta-model bug.

fn is_metadata_model_error(e: &MetaError) -> bool {
    matches!(e, MetaError::MetadataModelError(_))
}

match operation().await {
    Err(e @ MetaError::MetadataModelError(inner)) => {
        tracing::error!("metadata model failure: {inner}");
        // inspect inner for the concrete model-layer cause
    }
    other => other?,
}

When it happens

Trigger: Any meta-service operation that touches the metadata model (catalog creation, object management) when the underlying MetadataModelError propagates via #[from] — e.g. duplicate keys or model invariant violations in the metadata store.

Common situations: Corrupted or partially migrated metadata in the SQL metadata store; concurrent catalog mutations racing; bugs in model-layer validation surfacing during DDL.

Understand the failure class

Background: Database query failed: Internal Server Error 500s wrapping SQL, Prisma, and connection failures — what to check first — this error's family across 16 libraries.

Related errors

• Invalid time: {value} {unit} is out of range for a time of d
• Invalid jsonb encoding
• Invalid variant encoding
• should have meta client
• log_store_rewind_start_epoch {} not later than first_epoch {

AI-assisted analysis of risingwavelabs/risingwave@6469eb736d (2026-09-11). Data as JSON: /api/errors/d8735493957c8646. Report an issue: GitHub.