{"record":{"id":"ec45cedd7993ef37","repo":"influxdata/influxdb","slug":"join-error-0","errorCode":null,"errorMessage":"join error: {0}","messagePattern":"join error: (.+?)","errorType":"exception","errorClass":"Error","httpStatus":null,"severity":"error","filePath":"influxdb3_wal/src/lib.rs","lineNumber":46,"sourceCode":"use std::str::FromStr;\nuse std::sync::Arc;\nuse std::time::Duration;\nuse std::{any::Any, num::ParseIntError};\nuse thiserror::Error;\nuse tokio::sync::{OwnedSemaphorePermit, oneshot};\n\n#[derive(Debug, Error)]\npub enum Error {\n    #[error(\"wal buffer full with {0} ops\")]\n    BufferFull(usize),\n\n    #[error(\"error writing wal file: {0}\")]\n    WriteError(String),\n\n    #[error(\"deserialize error: {0}\")]\n    Serialize(#[from] crate::serialize::Error),\n\n    #[error(\"join error: {0}\")]\n    Join(#[from] tokio::task::JoinError),\n\n    #[error(\"object store error: {0}\")]\n    ObjectStoreError(#[from] ::object_store::Error),\n\n    #[error(\"wal is shutdown and not accepting writes\")]\n    Shutdown,\n\n    #[error(\"invalid gen1 duration {0}. Must be one of 1m, 5m, 10m\")]\n    InvalidGen1Duration(String),\n\n    #[error(\"invalid WAL file path\")]\n    InvalidWalFilePath,\n}\n\npub type Result<T, E = Error> = std::result::Result<T, E>;\n\n#[async_trait]","sourceCodeStart":28,"sourceCodeEnd":64,"githubUrl":"https://github.com/influxdata/influxdb/blob/06200ef96ba82c5f6727e5038a83af8e722c6875/influxdb3_wal/src/lib.rs#L28-L64","documentation":"Error::Join in influxdb3_wal wraps tokio::task::JoinError (via #[from]) and occurs when awaiting a spawned WAL-related task fails. A JoinError means the task panicked or was cancelled, so the WAL operation cannot complete.","triggerScenarios":"Calling .await on the JoinHandle of a WAL background task (e.g. spawned write/flush work) and the task has panicked or been aborted.","commonSituations":"A bug causing the WAL task to panic (check logs for the panic message), task abort during shutdown while a write is in flight, runtime teardown racing with in-flight operations.","solutions":["Find and fix the panic in the WAL task from the accompanying logs","Avoid aborting/cancelling WAL tasks while writes are pending; drain before shutdown","Retry the operation after the runtime is healthy, or restart the process if the task is unrecoverable"],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":null,"typeGuard":null,"tryCatchPattern":"match handle.await {\n    Ok(v) => v,\n    Err(Ok::<Error,_>) /* unwrapped */ => unreachable!(),\n    // after From conversion:\n    // Err(Error::Join(je)) if je.is_panic() => { resume_unwind or log & restart task }\n    Err(e) => return Err(e.into()),\n}","preventionTips":["Never abort WAL tasks mid-write; use graceful shutdown","Catch panics inside spawned tasks and convert to typed errors","Add panic hooks/logging for WAL background tasks"],"tags":["wal","tokio","task-panic","async","rust"],"backgroundTag":"thread-interrupted","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"}