influxdata/influxdb · error · Error

influxdb3_write error

Error message

influxdb3_write error: {0}

What it means

This is the InfluxDB3 server's wrapper for errors originating from the influxdb3_write crate, surfaced via thiserror's #[from] in influxdb3_server::Error. The server's HTTP API (writes, queries, catalog operations) delegates persistence to influxdb3_write, and any write-path failure (invalid line protocol, WAL issues, catalog conflicts) is transparently converted into this variant. The original influxdb3_write error message is embedded in the display string after 'influxdb3_write error: '.

Solutions

1. Read the inner influxdb3_write message embedded after 'influxdb3_write error: ' to identify the precise write failure
2. Validate line protocol syntax (measurement, tags, fields, timestamp) before sending to /write
3. Check for field type conflicts against the existing schema and either send consistent types or delete/recreate the affected table
4. Verify disk space and WAL directory permissions on the server
5. Check server logs for the full error chain to pinpoint the influxdb3_write source

Example fix

// before: unvalidated payload written directly
client.write(db, "cpu,host=a value=notanumber 123")
// after: ensure valid float field value
client.write(db, "cpu,host=a value=0.64 123")

use influxdb3_write::line_protocol::parse_lines;
fn validate_lp(payload: &str) -> Result<(), String> {
    parse_lines(payload.as_bytes()).map(|_| ()).map_err(|e| e.to_string())
}

fn as_write_error(e: &influxdb3_server::Error) -> Option<&influxdb3_write::Error> {
    match e { influxdb3_server::Error::InfluxDB3Write(w) => Some(w), _ => None }
}

match server_result {
    Err(influxdb3_server::Error::InfluxDB3Write(e)) => log::error!("write rejected: {e}"),
    Err(e) => log::error!("server error: {e}"),
    Ok(v) => handle(v),
}

When it happens

Trigger: Any server API call whose handling returns Err from influxdb3_write::Error: writing invalid or malformed line protocol via /write, writing to a database that fails catalog validation, WAL/persist operations failing, or internal write-buffer errors propagated through HttpApi handlers.

Common situations: Sending malformed line protocol (bad measurement syntax, invalid timestamps) to the HTTP write endpoint; writing with a field-type conflict against the existing schema; disk or WAL issues during persistence; clients using a different line protocol dialect than the server accepts.

Related errors

• Cannot write
• failed to parse line protocol
• line protocol parse failed
• write buffer error
• ' ' is a reserved column

AI-assisted analysis of influxdata/influxdb@06200ef96b (2026-09-19). Data as JSON: /api/errors/b083d3b51854add5. Report an issue: GitHub.

Appendix: source

Thrown at influxdb3_server/src/lib.rs:75

/// Version string combining the product name, [`influxdb3_process::INFLUXDB3_VERSION`], and [`influxdb3_process::INFLUXDB3_GIT_HASH`].
pub static VERSION_STRING: LazyLock<String> = LazyLock::new(|| build_version_string(PRODUCT_NAME));

#[derive(Debug, Error)]
pub enum Error {
    #[error("hyper error: {0}")]
    Hyper(#[from] hyper::Error),

    #[error("http error: {0}")]
    Http(#[from] Box<http::Error>),

    #[error("database not found {db_name}")]
    DatabaseNotFound { db_name: String },

    #[error("datafusion error: {0}")]
    DataFusion(#[from] datafusion::error::DataFusionError),

    #[error("influxdb3_write error: {0}")]
    InfluxDB3Write(#[from] influxdb3_write::Error),

    #[error("from hex error: {0}")]
    FromHex(#[from] hex::FromHexError),

    #[error("io error: {0}")]
    Io(#[from] std::io::Error),

    #[error("tls config error: {0}")]
    TlsConfig(String),

    #[error("rustls error: {0}")]
    Rustls(#[from] rustls::Error),
}

pub type Result<T, E = Error> = std::result::Result<T, E>;

#[derive(Debug, Clone)]

View on GitHub (pinned to 06200ef96b)