{"record":{"id":"afcc53a8b27133f3","repo":"clockworklabs/SpacetimeDB","slug":"transaction-retry-failed-again-afcc53","errorCode":null,"errorMessage":"transaction retry failed again","messagePattern":"transaction retry failed again","errorType":"panic","errorClass":null,"httpStatus":null,"severity":"critical","filePath":"crates/bindings/src/lib.rs","lineNumber":1230,"sourceCode":"        impl<F: Fn()> Drop for DoOnDrop<F> {\n            fn drop(&mut self) {\n                (self.0)();\n            }\n        }\n        let abort_guard = DoOnDrop(abort);\n        let res = body(&tx);\n        core::mem::forget(abort_guard);\n        res\n    };\n\n    let mut res = run();\n\n    match res {\n        Ok(_) if crate::sys::procedure::procedure_commit_mut_tx().is_err() => {\n            log::warn!(\"committing anonymous transaction failed\");\n            res = run();\n            match res {\n                Ok(_) => crate::sys::procedure::procedure_commit_mut_tx().expect(\"transaction retry failed again\"),\n                Err(_) => abort(),\n            }\n        }\n        Ok(_) => {}\n        Err(_) => abort(),\n    }\n\n    res\n}\n\nfn with_tx<T>(body: impl Fn(&TxContext) -> T, identity: Identity, connection_id: Option<ConnectionId>) -> T {\n    use core::convert::Infallible;\n    match try_with_tx::<T, Infallible>(|tx| Ok(body(tx)), identity, connection_id) {\n        Ok(v) => v,\n        Err(e) => match e {},\n    }\n}\n","sourceCodeStart":1212,"sourceCodeEnd":1248,"githubUrl":"https://github.com/clockworklabs/SpacetimeDB/blob/524b4487d949b61a07d4f39c862d1290259dfd20/crates/bindings/src/lib.rs#L1212-L1248","documentation":"After the anonymous transaction's body ran, procedure_commit_mut_tx failed; the bindings then re-ran the body once and retried the commit. This .expect fires when that second commit also fails - the body deterministically reproduces a commit-breaking condition (a write conflict, a constraint violation, or an I/O error during commit).","triggerScenarios":"A body whose writes conflict with concurrent activity on both attempts (hot rows, contention); disk/IO errors at commit time; oversized transactions; state that is deterministically invalid on every run.","commonSituations":"High-contention tables causing repeated conflicts; failing storage during commit; bugs where the body always writes an invalid combination of rows.","solutions":["Inspect host logs for the underlying commit error on both attempts.","Make the body's writes idempotent and conflict-free: narrow row sets, avoid hot rows, use upsert-style writes.","Reduce transaction size or split work across multiple commits.","If host-side I/O is at fault, fix storage before retrying."],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":null,"typeGuard":null,"tryCatchPattern":"let outcome = std::panic::catch_unwind(std::AssertUnwindSafe(|| invoke_procedure()));\nif outcome.is_err() {\n    // Second commit failed too: pull the underlying commit error from host logs,\n    // fix the conflict or storage issue, then re-invoke the procedure fresh.\n}","preventionTips":["Design procedure bodies to be idempotent and conflict-free on retry.","Avoid writing hot rows that contend across concurrent transactions.","Keep transactions small so commits rarely fail.","Monitor host commit-failure metrics; deterministic failures indicate a bug, not contention."],"tags":["panic","transaction","commit-conflict","rust","spacetimedb"],"backgroundTag":"transaction-commit-conflict","analyzedSha":"524b4487d949b61a07d4f39c862d1290259dfd20","analyzedAt":"2026-08-16T23:58:54.611Z","schemaVersion":2},"datasetVersion":"2026-08-17T04:17:16.089Z"}