{"record":{"id":"213c753b5dd3aae6","repo":"influxdata/influxdb","slug":"error-from-table-buffer-0","errorCode":null,"errorMessage":"error from table buffer: {0}","messagePattern":"error from table buffer: (.+?)","errorType":"exception","errorClass":"Error","httpStatus":null,"severity":"error","filePath":"influxdb3_write/src/write_buffer/mod.rs","lineNumber":95,"sourceCode":"    ColumnTypeMismatch {\n        name: String,\n        existing: ColumnType,\n        new: ColumnType,\n    },\n\n    #[error(\"catalog update error: {0}\")]\n    CatalogUpdateError(#[from] CatalogError),\n\n    #[error(\"error from persister: {0}\")]\n    PersisterError(#[from] PersisterError),\n\n    #[error(\"corrupt load state: {0}\")]\n    CorruptLoadState(String),\n\n    #[error(\"database name error: {0}\")]\n    DatabaseNameError(#[from] DatabaseNameError),\n\n    #[error(\"error from table buffer: {0}\")]\n    TableBufferError(#[from] table_buffer::Error),\n\n    #[error(\"error in last cache: {0}\")]\n    LastCacheError(#[from] last_cache::Error),\n\n    #[error(\"database not found {db_name:?}\")]\n    DatabaseNotFound { db_name: String },\n\n    #[error(\"table not found {table_name:?} in db {db_name:?}\")]\n    TableNotFound { db_name: String, table_name: String },\n\n    #[error(\"tried accessing database that does not exist\")]\n    DbDoesNotExist,\n\n    #[error(\"tried creating database named '{0}' that already exists\")]\n    DatabaseExists(String),\n\n    #[error(\"cannot write to soft-deleted database '{0}' - it is marked for deletion\")]","sourceCodeStart":77,"sourceCodeEnd":113,"githubUrl":"https://github.com/influxdata/influxdb/blob/06200ef96ba82c5f6727e5038a83af8e722c6875/influxdb3_write/src/write_buffer/mod.rs#L77-L113","documentation":"This transparent wrapper converts an error from the per-table `table_buffer` component (the in-memory columnar buffer that holds recent rows for query and dedup). It means the write reached a table's buffer but the buffer operation itself failed, with the underlying `table_buffer::Error` preserved as the source.","triggerScenarios":"Appending rows into a table buffer during write processing: schema/row data does not fit the buffer's column definitions, internal buffer invariant violated, or buffer-level persistence/commit fails.","commonSituations":"Writes whose column types conflict with what the buffer already holds; concurrent writers corrupting buffer assumptions; bugs or unsupported data shapes (deeply nested types) in the buffer.","solutions":["Inspect the inner table_buffer::Error message for the specific failure","Check that written column types match the table's existing schema","Retry transient failures; report persistent ones with the inner error to influxdb3 maintainers"],"exampleFix":"// before\nlet _ = write_lp(db, lp, false); // swallows TableBufferError detail\n// after\nif let Err(WriteBufferError::TableBufferError(e)) = write_lp(db, lp, false) {\n    log::error!(\"table buffer rejected write: {e}\");\n    return Err(e.into());\n}","handlingStrategy":"try-catch","validationCode":"// ensure row types match table schema before buffering\nfor col in batch.columns() {\n    let expected = table_schema.field(&col.name).unwrap();\n    assert_eq!(expected.data_type(), col.data_type(), \"column {} type mismatch\", col.name);\n}","typeGuard":"fn is_table_buffer_error(e: &WriteBufferError) -> Option<&table_buffer::Error> {\n    match e { WriteBufferError::TableBufferError(e) => Some(e), _ => None }\n}","tryCatchPattern":"match write_result {\n    Err(WriteBufferError::TableBufferError(e)) => {\n        log::error!(\"buffer rejected write: {e}\"); // inspect inner cause\n    }\n    other => other?,\n}","preventionTips":["Keep write schemas aligned with declared table schemas","Avoid changing column types for existing tables; add new columns instead","Test nested/complex types against the buffer before production use","Report persistent buffer errors upstream with the inner error attached"],"tags":["write-buffer","schema","influxdb","rust"],"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"}