risingwavelabs/risingwave · error · StreamError

Storage error: {0}

Error message

Storage error: {0}

What it means

This is the Storage variant of the stream engine's ErrorKind enum: any StorageError bubbling up through the streaming compute engine is wrapped and displayed as `Storage error: {0}`. It is a pass-through wrapper — the real cause is in the inner StorageError (Hummock/state-store failure).

Source

Thrown at src/stream/src/error.rs:40

use crate::executor::exchange::error::ExchangeChannelClosed;
use crate::executor::{Barrier, StreamExecutorError};
use crate::task::ActorId;

/// A specialized Result type for streaming tasks.
pub type StreamResult<T> = std::result::Result<T, StreamError>;

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

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

    #[error("Executor error: {0}")]
    Executor(
        #[from]
        #[backtrace]
        StreamExecutorError,

View on GitHub (pinned to 6469eb736d)

Solutions

1. Read the inner StorageError message/backtrace for the actual root cause
2. Verify object-store connectivity and credentials (endpoint, keys, region)
3. Check Hummock/meta service health and network between nodes
4. Retry the operation; if transient object-store errors persist, fix storage config or infra

// pre-check storage reachability (object store endpoint) before starting the stream job
// e.g. aws s3 ls s3://your-bucket --endpoint-url $ENDPOINT

match res {
    Err(e @ StreamError::Storage(_)) if is_transient(&e) => retry_with_backoff(|| op(), 3),
    other => other,
}

When it happens

Trigger: Any storage layer failure during streaming: Hummock read/write, S3/local object store I/O, SST operations, epoch/LSM operations, propagated via `?` through the `#[from] StorageError` conversion.

Common situations: Object store (S3/MinIO/OSS) unreachable or credentials invalid; Hummock service unavailable; network partition between compute and object storage; disk full in local storage mode.

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

• Storage error: {0}
• SST {0} is invalid
• Hummock error: {0}
• Unsupported task type for copy-on-write iceberg compaction:
• Magic number mismatch: expected {expected}, found: {found}

AI-assisted analysis of risingwavelabs/risingwave@6469eb736d (2026-09-11). Data as JSON: /api/errors/6a31f3a5f00a45eb. Report an issue: GitHub.