remove old json function

python/src/lib.rs

@@ -321,18 +321,6 @@ impl RawDeltaTable {
             .collect())
     }
 
-    pub fn arrow_schema_json(&self) -> PyResult<String> {
-        let schema = self
-            ._table
-            .get_schema()
-            .map_err(PyDeltaTableError::from_raw)?;
-        serde_json::to_string(
-            &<ArrowSchema as TryFrom<&deltalake::Schema>>::try_from(schema)
-                .map_err(PyDeltaTableError::from_arrow)?,
-        )
-        .map_err(|_| PyDeltaTableError::new_err("Got invalid table schema"))
-    }
-
     pub fn update_incremental(&mut self) -> PyResult<()> {
         rt()?
             .block_on(self._table.update_incremental(None))

python/src/schema.rs

@@ -1025,6 +1025,7 @@ impl PySchema {
             .map_err(|err: ArrowError| PyException::new_err(err.to_string()))?;
 
         fn convert_to_large_type(field: ArrowFieldRef, dt: ArrowDataType) -> ArrowFieldRef {
+            let field = field.as_ref().clone();
             match dt {
                 ArrowDataType::Utf8 => field.with_data_type(ArrowDataType::LargeUtf8).into(),
 
@@ -1065,7 +1066,7 @@ impl PySchema {
                         .into()
                 }
 
-                _ => field,
+                _ => field.into(),
             }
         }
 

rust/src/test_utils.rs

@@ -473,7 +473,7 @@ pub mod hdfs_cli {
 
     pub fn create_dir(dir_name: impl AsRef<str>) -> std::io::Result<ExitStatus> {
         let path = hdfs_cli_path();
-        let mut child = Command::new(&path)
+        let mut child = Command::new(path)
             .args([
                 "dfs",
                 "-mkdir",
@@ -487,7 +487,7 @@ pub mod hdfs_cli {
 
     pub fn delete_dir(dir_name: impl AsRef<str>) -> std::io::Result<ExitStatus> {
         let path = hdfs_cli_path();
-        let mut child = Command::new(&path)
+        let mut child = Command::new(path)
             .args([
                 "dfs",
                 "-rm",