refactor: fix spellings

datafusion/core/tests/parquet/arrow_statistics.rs

@@ -15,7 +15,7 @@
 // specific language governing permissions and limitations
 // under the License.
 
-//! This file contains an end to end test of extracting statitics from parquet files.
+//! This file contains an end to end test of extracting statistics from parquet files.
 //! It writes data into a parquet file, reads statistics and verifies they are correct
 
 use std::default::Default;
@@ -621,8 +621,8 @@ async fn test_timestamp() {
     // "seconds_timezoned" --> TimestampSecondArray
     // "names" --> StringArray
     //
-    // The file is created by 4 record batches, each has 5 rowws.
-    // Since the row group isze is set to 5, those 4 batches will go into 4 row groups
+    // The file is created by 4 record batches, each has 5 rows.
+    // Since the row group size is set to 5, those 4 batches will go into 4 row groups
     // This creates a parquet files of 4 columns named "nanos", "nanos_timezoned", "micros", "micros_timezoned", "millis", "millis_timezoned", "seconds", "seconds_timezoned"
     let reader = TestReader {
         scenario: Scenario::Timestamps,
@@ -1944,7 +1944,7 @@ async fn test_missing_statistics() {
         expected_min: Arc::new(Int64Array::from(vec![None])),
         expected_max: Arc::new(Int64Array::from(vec![None])),
         expected_null_counts: UInt64Array::from(vec![None]),
-        expected_row_counts: UInt64Array::from(vec![3]), // stil has row count statistics
+        expected_row_counts: UInt64Array::from(vec![3]), // still has row count statistics
         column_name: "i64",
         check: Check::RowGroup,
     }