influxdata/influxdb · error · Error

updating catalog on delete of last cache failed, you will…

Error message

updating catalog on delete of last cache failed, you will need to delete the cache again on server restart

What it means

Wraps a CatalogError raised while updating the catalog during deletion of a last-value cache. The in-memory cache was likely removed but the catalog persist step failed, leaving the system in a state where the deletion must be retried. The message explicitly warns the delete will need to happen again after a server restart.

Solutions

1. Retry the delete_last_cache call
2. Restart the server and delete the cache again, as the message advises
3. Check the underlying CatalogError (via the #[source]) for the root cause
4. Verify catalog persistence backend health before retrying

Example fix

// before
// single attempt, no retry
buffer.delete_last_cache(db, name)?;
// after
match buffer.delete_last_cache(db, name) {
    Err(e) if matches!(e, Error::DeleteLastCache(_)) => {
        // retry after restart / check catalog source error
        log::warn!("last-cache delete needs retry: {e}");
    }
    r => r?,
}

// ensure catalog persistence is reachable before deleting
if !catalog.health_check() {
    return Err("catalog backend unavailable; postpone cache deletion");
}

fn needs_cache_delete_retry(err: &WriteBufferError) -> bool {
    matches!(err, WriteBufferError::DeleteLastCache(_))
}

match buffer.delete_last_cache(db, name) {
    Err(WriteBufferError::DeleteLastCache(src)) => {
        log::warn!("catalog update failed ({src}); retry delete after restart");
    }
    other => other?,
}

When it happens

Trigger: Calling delete_last_cache when the catalog update/commit fails (e.g. persistence backend unavailable or catalog conflict).

Common situations: Catalog storage temporarily unavailable during cache deletion; race between cache deletion and other catalog mutations; crash/restart mid-deletion leaving a stale cache entry.

Understand the failure class

Background: "This is a bug, please report it": internal invariant violations, unreachable panics, and SNH errors explained — this error's family across 47 libraries.

Related errors

• column id in series key should be valid
• auto field family exists
• database should exist by id
• Failed to delete parquet file
• Failed to delete table index

AI-assisted analysis of influxdata/influxdb@06200ef96b (2026-09-19). Data as JSON: /api/errors/b491200b6ccdc925. Report an issue: GitHub.

Appendix: source

Thrown at influxdb3_write/src/write_buffer/mod.rs:128

    #[error("tried creating database named '{0}' that already exists")]
    DatabaseExists(String),

    #[error("cannot write to soft-deleted database '{0}' - it is marked for deletion")]
    DatabaseDeleted(String),

    #[error("tried accessing table that do not exist")]
    TableDoesNotExist,

    #[error("table '{db_name}.{table_name}' already exists")]
    TableAlreadyExists {
        db_name: Arc<str>,
        table_name: Arc<str>,
    },

    #[error("tried accessing column with name ({0}) that does not exist")]
    ColumnDoesNotExist(String),

    #[error(
        "updating catalog on delete of last cache failed, you will need to delete the cache \
        again on server restart"
    )]
    DeleteLastCache(#[source] CatalogError),

    #[error("error from wal: {0}")]
    WalError(#[from] influxdb3_wal::Error),

    #[error("error in distinct value cache: {0}")]
    DistinctCacheError(#[from] distinct_cache::ProviderError),

    #[error("cannot write to a compactor-only server")]
    NoWriteInCompactorOnly,

    #[error("error: {0}")]
    AnyhowError(#[from] anyhow::Error),

    #[error("write not allowed on internal database")]

View on GitHub (pinned to 06200ef96b)