Method put

datafusion/execution/src/cache/file_statistics_cache.rs:97–124

(
        &mut self,
        key: &TableScopedPath,
        value: CachedFileMetadata,
    )

    }

    fn put(
        &mut self,
        key: &TableScopedPath,
        value: CachedFileMetadata,
    ) -> Option<CachedFileMetadata> {
        let mut ctx = DFHeapSizeCtx::default();
        let key_size = key.heap_size(&mut ctx);
        let entry_size = value.heap_size(&mut ctx);

        if entry_size + key_size > self.memory_limit {
            // Remove potential stale entry
            return self.remove(key);
        }

        self.memory_used += entry_size;
        self.memory_used += key_size;

        let old_value = self.lru_queue.put(key.clone(), value);
        if let Some(old_entry) = &old_value {
            let mut ctx = DFHeapSizeCtx::default();
            self.memory_used -= old_entry.heap_size(&mut ctx);
            self.memory_used -= key_size;
        }

        self.evict_entries();

        old_value
    }

    fn remove(&mut self, k: &TableScopedPath) -> Option<CachedFileMetadata> {
        if let Some(old_entry) = self.lru_queue.remove(k) {