diff --git a/src/main/thrift/parquet.thrift b/src/main/thrift/parquet.thrift index fd092fcb..9f905727 100644 --- a/src/main/thrift/parquet.thrift +++ b/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; }