influxdata/influxdb · error · Error

Write buffer error

Error message

Write buffer error: {0}

What it means

Display message of the `Error::WriteBuffer` variant, converted with #[from] from `influxdb3_write::write_buffer::Error`. It means an operation against the in-memory write buffer (persister of LP data before WAL/snapshots) failed while the serve command was executing.

Solutions

1. Read the wrapped write_buffer::Error source to find the exact failing operation
2. Validate WAL/segment files on disk for corruption from an unclean shutdown
3. Check disk space and filesystem health for the WAL directory
4. Reduce batch sizes or fix client line protocol if ingestion replay is failing

if let Err(e @ Error::WriteBuffer(_)) = res {
    eprintln!("write buffer failed: {e:#}");
}

When it happens

Trigger: Any write-buffer operation during `influxdb3 serve` (ingest, WAL append, buffer validation) returns `influxdb3_write::write_buffer::Error`, automatically converted into this variant via #[from].

Common situations: Bad line-protocol batches accepted at startup replay, disk/WAL issues, or internal buffer inconsistencies after an unclean shutdown.

Related errors

• failed to initialize write buffer
• write buffer error
• catalog update error
• error from table buffer
• Failed to initialize table index cache

AI-assisted analysis of influxdata/influxdb@06200ef96b (2026-09-19). Data as JSON: /api/errors/adeb3ffe8fd59e10. Report an issue: GitHub.

Appendix: source

Thrown at influxdb3/src/commands/serve.rs:135

    #[error("Cannot parse object store config: {0}")]
    ObjectStoreParsing(#[from] influxdb3_clap_blocks::object_store::ParseError),

    #[error("Tracing config error: {0}")]
    TracingConfig(#[from] trace_exporters::Error),

    #[error("Error initializing tokio runtime: {0}")]
    TokioRuntime(#[source] std::io::Error),

    #[error("Failed to bind address")]
    BindAddress(#[source] std::io::Error),

    #[error("Server error: {0}")]
    Server(#[source] influxdb3_server::Error),

    #[error("Token error: {0}")]
    TokenError(CatalogError),

    #[error("Write buffer error: {0}")]
    WriteBuffer(#[from] influxdb3_write::write_buffer::Error),

    #[error("invalid token: {0}")]
    InvalidToken(#[from] hex::FromHexError),

    #[error("failed to initialize write buffer: {0:?}")]
    WriteBufferInit(#[source] anyhow::Error),

    #[error("failed to initialize catalog: {0}")]
    InitializeCatalog(#[source] CatalogError),

    #[error("failed to initialize last cache: {0}")]
    InitializeLastCache(#[source] last_cache::Error),

    #[error("failed to initialize distinct cache: {0:#}")]
    InitializeDistinctCache(#[source] influxdb3_cache::distinct_cache::ProviderError),

    #[error("lost backend")]

View on GitHub (pinned to 06200ef96b)