{"record":{"id":"dd11d6fae8685e15","repo":"influxdata/influxdb","slug":"failed-to-parse-snapshot-sequence-number-from-filename-table","errorCode":null,"errorMessage":"Failed to parse snapshot sequence number from filename","messagePattern":"Failed to parse snapshot sequence number from filename","errorType":"error_code","errorClass":"TableIndexError","httpStatus":null,"severity":"error","filePath":"influxdb3_write/src/table_index.rs","lineNumber":67,"sourceCode":"    #[error(\"Cannot merge table indices with mismatched identifiers: {expected} != {actual}\")]\n    MergeMismatch {\n        expected: TableIndexId,\n        actual: TableIndexId,\n    },\n\n    #[error(\"Failed to parse table index path from object store path\")]\n    TableIndexPath(#[source] crate::paths::PathError),\n\n    #[error(\"Failed to parse table index snapshot path from object store path\")]\n    TableIndexSnapshotPath(#[source] crate::paths::PathError),\n\n    #[error(\"Failed to update table index: join task failed\")]\n    UpdateTaskFailed(#[source] tokio::task::JoinError),\n\n    #[error(\"Object meta is missing filename\")]\n    MissingFilename,\n\n    #[error(\"Failed to parse snapshot sequence number from filename\")]\n    InvalidSnapshotSequenceNumber,\n\n    #[error(\"Table snapshot persistence task failed\")]\n    TableSnapshotPersistenceTaskFailed(#[source] tokio::task::JoinError),\n\n    #[error(\"Unexpected error\")]\n    Unexpected(#[source] anyhow::Error),\n\n    #[error(\"Object store operation failed\")]\n    ObjectStore(#[source] object_store::Error),\n\n    #[error(\"JSON serialization/deserialization failed\")]\n    Json(#[source] serde_json::Error),\n}\n\npub type Result<T> = std::result::Result<T, TableIndexError>;\n\n/// An partial, incremental index into a given database/table. Should not be used to make decisions","sourceCodeStart":49,"sourceCodeEnd":85,"githubUrl":"https://github.com/influxdata/influxdb/blob/06200ef96ba82c5f6727e5038a83af8e722c6875/influxdb3_write/src/table_index.rs#L49-L85","documentation":"TableIndexError::InvalidSnapshotSequenceNumber is raised when the snapshot sequence number cannot be parsed from a snapshot object's filename. Snapshot files embed a monotonically increasing SnapshotSequenceNumber used for ordering and deduplication; a filename whose numeric segment is missing or non-numeric cannot be ordered. This variant carries no source error — parsing simply failed.","triggerScenarios":"Iterating snapshot objects and parsing the sequence number out of the filename (e.g. splitting on '_' or extracting a numeric suffix) where the segment is absent, corrupted, or not a valid u64.","commonSituations":"Files hand-renamed or edited in the bucket; truncated filenames from an interrupted write; legacy snapshot naming from an older version; foreign files dropped into the snapshot prefix.","solutions":["Inspect the failing filename and fix or remove the malformed object.","Delete foreign/legacy files from the snapshot prefix that don't carry a valid numeric sequence segment.","Skip unparsable filenames with a warning rather than failing the whole listing.","Ensure all writers run a compatible InfluxDB 3 version so filenames follow the same schema."],"exampleFix":"// before\nlet seq: SnapshotSequenceNumber = parse_seq(name).unwrap();\n// after\nmatch parse_seq(name) {\n    Ok(seq) => process(seq),\n    Err(_) => warn!(%name, \"skipping snapshot with unparsable sequence number\"),\n}","handlingStrategy":"validation","validationCode":"fn parse_seq_from_filename(name: &str) -> Option<u64> {\n    name.rsplit('_').next()?.trim_end_matches(\".json\").parse::<u64>().ok()\n}\n// only process files where this returns Some","typeGuard":null,"tryCatchPattern":"match parse_seq(name) {\n    Some(seq) => process(seq),\n    None => { warn!(%name, \"invalid snapshot sequence number; skipping\"); continue; }\n}","preventionTips":["Validate snapshot filename schema before listing/processing (regex on numeric suffix).","Lock the data bucket to tooling writes; no manual renames.","Skip-and-alert on unparsable filenames rather than failing the whole sweep.","Pin all writers to the same InfluxDB 3 version so naming stays consistent."],"tags":["filename-parsing","snapshot","format","influxdb3"],"backgroundTag":"invalid-argument-format","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"}