# Considerations and limitations when using AWS Glue Iceberg REST Catalog APIs


Following are the considerations and limitations when using the Apache Iceberg REST Catalog Data Definition Language (DDL) operation behavior.

**Considerations**
+  **`RenameTable` API behavior** – The `RenameTable` operation is supported in tables in Amazon Redshift but not in Amazon S3. 
+  **DDL operations for namespaces and tables in Amazon Redshift** – Create, Update, Delete operations for namespaces and tables in Amazon Redshift are asynchronous operations because they are dependent on when Amazon Redshift managed workgroup is available and whether a conflicting DDL and DML transaction is in progress and operation has to wait for lock and then attempt to commit changes. 

**Limitations**
+  View APIs in the Apache Iceberg REST specification are not supported in AWS Glue Iceberg REST Catalog.