westonpace commented on code in PR #13582:
URL: https://github.com/apache/datafusion/pull/13582#discussion_r1861144621
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datafusion/catalog/src/catalog.rs:
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@@ -102,24 +103,25 @@ use datafusion_common::Result;
///
/// [`TableProvider`]: crate::TableProvider
+#[async_trait]
pub trait CatalogProvider: Debug + Sync + Send {
/// Returns the catalog provider as [`Any`]
/// so that it can be downcast to a specific implementation.
fn as_any(&self) -> &dyn Any;
/// Retrieves the list of available schema names in this catalog.
- fn schema_names(&self) -> Vec<String>;
+ async fn schema_names(&self) -> Vec<String>;
Review Comment:
If there is a case where there are so many tables / schemas / catalogs that
caching the full list is too expensive then the planner is probably going to
have other problems anyways. I'm guessing the planner is iterating through
this list and constructing a hash map it uses to resolve lookups and so the
thing is going to get cached one way or another.
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