{"record":{"id":"d4a5497948db9be7","repo":"influxdata/influxdb","slug":"write-buffer-error-0-http","errorCode":null,"errorMessage":"write buffer error: {0}","messagePattern":"write buffer error: (.+?)","errorType":"http","errorClass":"Error","httpStatus":null,"severity":"error","filePath":"influxdb3_server/src/http.rs","lineNumber":295,"sourceCode":"    MissingWriteParams,\n\n    #[error(\"the mime type specified was not valid UTF8: {0}\")]\n    NonUtf8MimeType(#[from] FromUtf8Error),\n\n    /// Serde decode error\n    #[error(\"serde error: {0}\")]\n    SerdeUrlDecoding(#[from] serde_urlencoded::de::Error),\n\n    /// Arrow error\n    #[error(\"arrow error: {0}\")]\n    Arrow(#[from] arrow::error::ArrowError),\n\n    /// Hyper error\n    #[error(\"hyper http error: {0}\")]\n    Hyper(#[from] hyper::http::Error),\n\n    /// WriteBuffer error\n    #[error(\"write buffer error: {0}\")]\n    WriteBuffer(#[from] influxdb3_write::write_buffer::Error),\n\n    /// Persister error\n    #[error(\"persister error: {0}\")]\n    Persister(#[from] influxdb3_write::persister::PersisterError),\n\n    // ToStrError\n    #[error(\"to str error: {0}\")]\n    ToStr(#[from] hyper::header::ToStrError),\n\n    // SerdeJsonError\n    #[error(\"serde json error: {0}\")]\n    SerdeJson(#[from] serde_json::Error),\n\n    // Influxdb3 Write\n    #[error(\"serde json error: {0}\")]\n    Influxdb3Write(#[from] influxdb3_write::Error),\n","sourceCodeStart":277,"sourceCodeEnd":313,"githubUrl":"https://github.com/influxdata/influxdb/blob/06200ef96ba82c5f6727e5038a83af8e722c6875/influxdb3_server/src/http.rs#L277-L313","documentation":"Passthrough for influxdb3_write::write_buffer::Error. When an HTTP write request reaches the write buffer and fails there (invalid line protocol, database not found, buffer internal error), the HTTP layer wraps it as 'write buffer error: ...'.","triggerScenarios":"POST /write with malformed line protocol; writing to a database that doesn't exist or can't be created; write-buffer persistence failures.","commonSituations":"Typos or bad escaping in line protocol; wrong measurement/tag/field syntax; writing timestamps outside the allowed range; disk or WAL problems on the server.","solutions":["Read the wrapped inner error for the specific write failure","Validate line protocol syntax (measurement,tags fields timestamp) before sending","Ensure the target database name is correct and exists","Check server logs/disk health if the error indicates persistence failure"],"exampleFix":"// before (missing field separator)\ncpu,host=a usage=90\n// after\ncpu,host=a usage=90,core=8 1690000000000000000","handlingStrategy":"retry","validationCode":"// validate line protocol before sending\nfor (const line of lines) {\n  if (!/^[^ ,=]+(,[^ ,=]+=[^ ,=]+)*\\s+[^ ]+/.test(line)) throw new Error(\"bad line protocol: \" + line);\n}\nif (!db) throw new Error(\"db is required\");","typeGuard":null,"tryCatchPattern":"try { await write(lines); } catch (e) {\n  if (String(e).includes(\"write buffer error\")) {\n    // parse inner cause: syntax errors -> fix payload; transient -> retry with backoff\n  }\n}","preventionTips":["Validate line protocol syntax with a local parser before sending","Ensure the database exists (or auto-create is enabled)","Keep timestamps within the server's allowed range","Retry transient write failures with exponential backoff"],"tags":["influxdb3","write-buffer","line-protocol","http"],"backgroundTag":"database-write-failed","analyzedSha":"06200ef96ba82c5f6727e5038a83af8e722c6875","analyzedAt":"2026-09-19T12:55:30.003Z","contentChangedAt":"2026-09-19T12:55:30.003Z","schemaVersion":2},"datasetVersion":"2026-09-23T08:17:48.524Z"}