risingwavelabs/risingwave · error · StreamExecutorError

Chunk operation error: {0}

Error message

Chunk operation error: {0}

What it means

`ErrorKind::ArrayError` wraps an `ArrayError` with the message "Chunk operation error: {0}". RisingWave columnar chunks (DataChunk/ArrayRef) raise `ArrayError` for invalid operations on column arrays; this variant is the automatic conversion into the stream executor error type via `#[from]`.

Source

Thrown at src/stream/src/executor/error.rs:48

/// A specialized Result type for streaming executors.
pub type StreamExecutorResult<T> = std::result::Result<T, StreamExecutorError>;

/// The error type for streaming executors.
#[derive(
    thiserror::Error, thiserror_ext::ReportDebug, thiserror_ext::Box, thiserror_ext::Construct,
)]
#[thiserror_ext(newtype(name = StreamExecutorError, backtrace))]
#[derive(AsRefStr)]
pub enum ErrorKind {
    #[error("Storage error: {0}")]
    Storage(
        #[backtrace]
        #[from]
        StorageError,
    ),

    #[error("Chunk operation error: {0}")]
    ArrayError(
        #[from]
        #[backtrace]
        ArrayError,
    ),

    #[error("Chunk operation error: {0}")]
    ExprError(
        #[from]
        #[backtrace]
        ExprError,
    ),

    // TODO: remove this after state table is fully used
    #[error("Serialize/deserialize error: {0}")]
    SerdeError(
        #[source]
        #[backtrace]

View on GitHub (pinned to 6469eb736d)

Solutions

1. Read the inner ArrayError message to find which column/type mismatched.
2. Verify the stream chunk schema matches the executor's expected schema; recreate affected MVs/sources after DDL changes.
3. Check for version-skew between nodes (rolling upgrades) that could change the wire schema mid-flight.
4. Reproduce with the specific query/connector and file a bug with the inner error if it looks like an executor bug.

// Validate upstream chunk schema matches expectations before deployment:
// compare column types of the source/MV with the executor's schema after any DDL change.
SHOW COLUMNS FROM mv_name;

// Operators: catch the actor failure via logs/alerts and rebuild the affected MV:
// grep 'Chunk operation error' .risingwave/log/*.log
DROP MATERIALIZED VIEW mv_name; CREATE MATERIALIZED VIEW mv_name AS ...;

When it happens

Trigger: Any column-array operation in a streaming executor that fails — building/appending to an array with the wrong type, out-of-bounds access on a chunk, type mismatch when casting or serializing chunk data — propagated as a StreamExecutorError.

Common situations: A schema mismatch between an executor's expected column types and the actual upstream chunk (e.g., after altering a source); buggy UDF or expression producing unexpected types; serialization of Protobuf-encoded stream chunks that don't match the local schema.

Understand the failure class

Background: Type mismatch errors: IllegalArgumentException, TypeError and type guards across 150 open-source libraries — this error's family across 150 libraries.

Related errors

• Array error: {0}
• dynamic filter condition eval must return bool array
• Time column should be Timestamp or Timestamptz
• Join key types are not aligned: LHS: {outer_type:?}, RHS: {i
• Join key types are not aligned: LHS: {outer_type:?}, RHS: {i

AI-assisted analysis of risingwavelabs/risingwave@6469eb736d (2026-09-11). Data as JSON: /api/errors/95e2f6b0708b5841. Report an issue: GitHub.