scan: create TableWithoutSnapshot error

Author: mattheusv

crates/iceberg/src/error.rs

@@ -44,6 +44,11 @@ pub enum ErrorKind {
     ///
     /// This error is returned when given iceberg feature is not supported.
     FeatureUnsupported,
+    /// Iceberg table don't have any snapshot to scan
+    ///
+    /// This error is returned when a table scan is attempt to executed on table
+    /// without snapshots.
+    TableWithoutSnapshot,
 }
 
 impl ErrorKind {
@@ -59,6 +64,7 @@ impl From<ErrorKind> for &'static str {
             ErrorKind::Unexpected => "Unexpected",
             ErrorKind::DataInvalid => "DataInvalid",
             ErrorKind::FeatureUnsupported => "FeatureUnsupported",
+            ErrorKind::TableWithoutSnapshot => "TableWithoutSnapshot",
         }
     }
 }

crates/iceberg/src/scan.rs

@@ -177,7 +177,7 @@ impl<'a> TableScanBuilder<'a> {
                 .current_snapshot()
                 .ok_or_else(|| {
                     Error::new(
-                        ErrorKind::FeatureUnsupported,
+                        ErrorKind::TableWithoutSnapshot,
                         "Can't scan table without snapshots",
                     )
                 })?