influxdata/influxdb · error · TableIndexCacheError

Failed to parse table index path from object store path

Error message

Failed to parse table index path from object store path

What it means

TableIndexCacheError::TableIndexPath, thrown by the table index LRU cache (influxdb3_write/src/table_index_cache.rs) when an object store path returned by a List call cannot be parsed into the strongly-typed TableIndexPath via crate::paths. The cache expects every object under the table index prefix to follow the canonical layout; a malformed name means the store contains unexpected or corrupt objects.

Solutions

1. List and inspect objects under the table index prefix; identify the object whose name does not match the expected layout and remove or rename it to the canonical path format
2. Check for mixed InfluxDB 3 versions or migration tooling writing to the same bucket and align the path scheme
3. Upgrade the crate if the path format changed between versions; regenerate/rebuild the index by re-running the conversion/recovery tooling
4. File an issue if the offending object was written by the server itself — this usually indicates a writer bug

Example fix

// before: blindly parsing every listed path
for meta in store.list(Some(&prefix)) {
    let idx = TableIndexPath::from_obj_path(meta.location())?;
}
// after: skip non-conforming objects with a warning
for meta in store.list(Some(&prefix)) {
    match TableIndexPath::from_obj_path(meta.location()) {
        Ok(idx) => handle(idx),
        Err(e) => warn!(path=%meta.location(), error=%e, "skipping non-index object"),
    }
}

fn is_valid_table_index_path(loc: &object_store::path::Path) -> bool {
    let parts: Vec<_> = loc.parts().map(|p| p.as_ref()).collect();
    parts.len() >= 3 && parts.iter().all(|p| !p.is_empty())
}
// pre-filter list results before parsing

fn parse_index_path(loc: &ObjPath) -> Option<TableIndexPath> {
    TableIndexPath::from_obj_path(loc).ok()
}

match result {
    Err(TableIndexCacheError::TableIndexPath(e)) => {
        warn!(error=?e, "unparseable index path; skipping");
        // continue processing other entries
    }
    other => other?,
}

When it happens

Trigger: During cache warm-up or index enumeration, list_indices() iterates a stream of ObjectMeta and calls TableIndexPath::from_obj_path (or equivalent parse); any object whose relative path lacks the expected db/table/index segments yields PathError and this variant.

Common situations: Manual file copies or migrations into the object store bucket placing files outside the canonical layout; objects written by an older/newer InfluxDB 3 version with a changed path scheme; leftover temp/partial objects in the index directory.

Understand the failure class

Background: "Invalid URL" errors: why new URL(), URI.parse, and reqwest::Url reject your string — missing scheme, whitespace, and bad path format — this error's family across 39 libraries.

• Parsing and encoding errors: unexpected token, malformed input — why parsers reject input and how to find the real culprit.

Related errors

• Failed to parse snapshot info file path
• Failed to parse table index path from object store path
• Failed to parse table index snapshot path from object store…
• Failed to create table index from object store
• Failed to delete parquet file

AI-assisted analysis of influxdata/influxdb@06200ef96b (2026-09-19). Data as JSON: /api/errors/df97ac1a01b159c0. Report an issue: GitHub.

Appendix: source

Thrown at influxdb3_write/src/table_index_cache.rs:66

    #[error("TableIndex operation failed")]
    TableIndex(#[source] crate::table_index::TableIndexError),

    #[error("Object meta is missing filename")]
    MissingFilename,

    #[error("Failed to parse snapshot sequence number from filename")]
    InvalidSnapshotSequenceNumber,

    #[error("Unexpected error")]
    Unexpected(#[source] anyhow::Error),

    #[error("Table snapshot persistence task failed")]
    TableSnapshotPersistenceTaskFailed(#[source] tokio::task::JoinError),

    #[error("Failed to list table indices from object store")]
    ListIndices(#[source] object_store::Error),

    #[error("Failed to parse table index path from object store path")]
    TableIndexPath(#[source] crate::paths::PathError),

    #[error("Failed to list table index snapshots from object store")]
    ListSnapshots(#[source] object_store::Error),

    #[error("Failed to parse table index snapshot path from object store path")]
    TableIndexSnapshotPath(#[source] crate::paths::PathError),

    #[error("Failed to update table index: join task failed")]
    UpdateTaskFailed(#[source] tokio::task::JoinError),

    #[error("Failed to list object store metadata")]
    ListMetasError(#[source] object_store::Error),

    #[error("Failed to load table index conversion marker bytes from object store")]
    LoadConversionMarkerBytesError(#[source] object_store::Error),

    #[error("Failed to serialize initial table index conversion marker")]

View on GitHub (pinned to 06200ef96b)