risingwavelabs/risingwave · error · BatchError

External system error

Error message

External system error: {0}

What it means

BatchError::ExternalSystemError: an operation against an external system outside the connector path failed — the wrapped BatchExternalSystemError covers things like query-file system access, external sink/source services used by batch tasks. It fires when a batch task delegates to an external component (filesystem, ad-hoc service) and that component reports an error that has no dedicated BatchError variant.

Solutions

1. Inspect the wrapped BatchExternalSystemError to identify the external component and its native error
2. Fix the underlying external resource (permissions, reachability, configuration)
3. Retry if the external system failure is transient

When it happens

Trigger: Thrown at src/batch/src/error.rs:115 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of risingwavelabs/risingwave@6469eb736d (2026-09-11). Data as JSON: /api/errors/8471da3936fe6ca1. Report an issue: GitHub.

Appendix: source

Thrown at src/batch/src/error.rs:115

        #[backtrace]
        BoxedError,
    ),

    #[error("Failed to read from system table: {0}")]
    SystemTable(
        #[from]
        #[backtrace]
        BoxedError,
    ),

    #[error(transparent)]
    Dml(
        #[from]
        #[backtrace]
        DmlError,
    ),

    #[error("External system error: {0}")]
    ExternalSystemError(
        #[from]
        #[backtrace]
        BatchExternalSystemError,
    ),

    // Make the ref-counted type to be a variant for easier code structuring.
    // TODO(error-handling): replace with `thiserror_ext::Arc`
    #[error(transparent)]
    Shared(
        #[from]
        #[backtrace]
        Arc<Self>,
    ),

    #[error("Empty workers found")]
    EmptyWorkerNodes,

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