Method drop_array

nodedb/src/engine/array/engine.rs:143–152

Drop the per-core store for `id` and best-effort remove the on-disk segment directory. Called by the `DropArray` dispatch handler during `DROP ARRAY` broadcast so a follow-up `CREATE ARRAY` of the same name (potentially with a different schema) doesn't carry stale memtable / segment state. Idempotent: returns `Ok(())` when no store is open and no directory exists. Directory-removal errors are sur

(&mut self, id: &ArrayId)

    /// `ArrayEngineError::Io` so the broadcast's status reflects the
    /// failure.
    pub fn drop_array(&mut self, id: &ArrayId) -> ArrayEngineResult<()> {
        let _ = self.arrays.remove(id);
        let dir = array_dir(&self.cfg.root, id);
        if dir.exists() {
            std::fs::remove_dir_all(&dir).map_err(|e| ArrayEngineError::Io {
                detail: format!("rmdir {dir:?}: {e}"),
            })?;
        }
        Ok(())
    }

    pub fn store(&self, id: &ArrayId) -> ArrayEngineResult<&ArrayStore> {
        self.arrays