change map field default names to follow the parquet format spec

apache · Nov 29, 2024 · c253f85 · c253f85
1 parent c8fda9a
commit c253f85
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Showing 2 changed files with 4 additions and 4 deletions.
diff --git a/arrow-array/src/builder/map_builder.rs b/arrow-array/src/builder/map_builder.rs
@@ -78,9 +78,9 @@ pub struct MapFieldNames {
 impl Default for MapFieldNames {
     fn default() -> Self {
         Self {
-            entry: "entries".to_string(),
-            key: "keys".to_string(),
-            value: "values".to_string(),
+            entry: "key_value".to_string(),
+            key: "key".to_string(),
+            value: "value".to_string(),
         }
     }
 }

diff --git a/arrow-schema/src/datatype.rs b/arrow-schema/src/datatype.rs
@@ -370,7 +370,7 @@ pub enum DataType {
     ///
     /// In a field with Map type, the field has a child Struct field, which then
     /// has two children: key type and the second the value type. The names of the
-    /// child fields may be respectively "entries", "key", and "value", but this is
+    /// child fields may be respectively "key_value", "key", and "value", but this is
     /// not enforced.
     Map(FieldRef, bool),
     /// A run-end encoding (REE) is a variation of run-length encoding (RLE). These