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Co-authored-by: Gang Wu <[email protected]>

src/main/thrift/parquet.thrift

@@ -216,21 +216,22 @@ struct Statistics {
    /** count of distinct values occurring */
    4: optional i64 distinct_count;
    /**
-    * lower and upper bound values for the column, determined by its ColumnOrder.
-    * These may be the actual minimum and maximum values found on a column chunk,
-    * but can also be (more compact) values that do not exist on a column chunk.
-    * For example, instead of storing "Blart Versenwald III", a writer may set
-    * min_value="B", max_value="C". Such more compact values must still be valid
-    * values within the column's logical type.
+    * Lower and upper bound values for the column, determined by its ColumnOrder.
+    *
+    * These may be the actual minimum and maximum values found on a page or column
+    * chunk, but can also be (more compact) values that do not exist on a page or
+    * column chunk. For example, instead of storing "Blart Versenwald III", a writer
+    * may set min_value="B", max_value="C". Such more compact values must still be
+    * valid values within the column's logical type.
     *
     * Values are encoded using PLAIN encoding, except that variable-length byte
     * arrays do not include a length prefix.
     */
    5: optional binary max_value;
    6: optional binary min_value;
-   /** If true, max_value is the actual maximum value found on a column chunk **/
+   /** If true, max_value is the actual maximum value for a column */
    7: optional bool is_max_value_exact;
-   /** If true, min_value is the actual minimum value found on a column chunk **/
+   /** If true, min_value is the actual minimum value for a column */
    8: optional bool is_min_value_exact;
 }