[Fix](orc-reader) Fix orc decimal128 scale issue.

docker/thirdparties/docker-compose/hive/scripts/create_preinstalled_table.hql

@@ -1743,5 +1743,24 @@ LOCATION
 
 msck repair table parquet_timestamp_nanos;
 
+CREATE TABLE `orc_decimal_table`(
+    id INT,
+    decimal_col1 DECIMAL(8, 4),
+    decimal_col2 DECIMAL(18, 6),
+    decimal_col3 DECIMAL(38, 12),
+    decimal_col4 DECIMAL(9, 0),
+    decimal_col5 DECIMAL(27, 9),
+    decimal_col6 DECIMAL(9, 0))
+ROW FORMAT SERDE
+  'org.apache.hadoop.hive.ql.io.orc.OrcSerde'
+STORED AS INPUTFORMAT
+  'org.apache.hadoop.hive.ql.io.orc.OrcInputFormat'
+OUTPUTFORMAT
+  'org.apache.hadoop.hive.ql.io.orc.OrcOutputFormat'
+LOCATION
+  '/user/doris/preinstalled_data/orc_table/orc_decimal_table';
+
+msck repair table orc_decimal_table;
+
 
 show tables;

regression-test/data/external_table_p0/hive/test_hive_orc.out

@@ -83,6 +83,24 @@ tablets	tinyint_col	179	182	182	187	183	181	177	183	177	187	183	202	202	186	528
 -- !only_partition_col --
 3600	3600
 
+-- !decimals1 --
+1	1.1234	12.123456	123.123456789876	12	1234.123456789	123
+2	1234.1234	123456789123.123456	12345678912345678912345678.123456789876	123456789	123456789123456789.123456780	987654321
+3	1234.0000	123456789123.000000	12345678912345678912345678.000000000000	123456789	123456789123456789.000000000	987654321
+4	0.0000	0.000000	123.123456789876	12	0E-9	123
+5	1.1234	12.123456	0E-12	0	1234.123456789	0
+
+-- !decimals2 --
+3	1234.0000	123456789123.000000	12345678912345678912345678.000000000000	123456789	123456789123456789.000000000	987654321
+
+-- !decimals3 --
+1	1.1234	12.123456	123.123456789876	12	1234.123456789	123
+2	1234.1234	123456789123.123456	12345678912345678912345678.123456789876	123456789	123456789123456789.123456780	987654321
+
+-- !decimals4 --
+4	0.0000	0.000000	123.123456789876	12	0E-9	123
+5	1.1234	12.123456	0E-12	0	1234.123456789	0
+
 -- !select_top50 --
 4	55	999742610	400899305488827731	false	6.5976813E8	7.8723304616937395E17	\N	base tennis pit vertical friday	2022-08-19T07:29:58	\N	tablets	smallint_col	2019-02-07	[7.53124931825377e+17]	["NbSSBtwzpxNSkkwga"]	tablets	smallint_col
 2	49	999613702	105493714032727452	\N	6.3322381E8	9.8642324410240179E17	Unveil bright recruit participate. Suspect impression camera mathematical revelation. Fault live2 elbow debt west hydrogen current.	how literary	2022-09-03T17:20:21	481707.1065	tablets	boolean_col	2020-01-12	[]	["HoMrAnn", "wteEFvIwoZsVpVQdscMb", NULL, "zcGFmv", "kGEBBckbMtX", "hrEtCGFdPWZK"]	tablets	boolean_col

regression-test/suites/external_table_p0/hive/test_hive_orc.groovy

@@ -66,6 +66,14 @@ suite("test_hive_orc", "all_types,p0,external,hive,external_docker,external_dock
         qt_only_partition_col """select count(p1_col), count(p2_col) from orc_all_types;"""
     }
 
+    // decimals
+    def decimals = {
+        qt_decimals1 """select * from orc_decimal_table order by id;"""
+        qt_decimals2 """select * from orc_decimal_table where id = 3 order by id;"""
+        qt_decimals3 """select * from orc_decimal_table where id < 3 order by id;"""
+        qt_decimals4 """select * from orc_decimal_table where id > 3 order by id;"""
+    }
+
     String enabled = context.config.otherConfigs.get("enableHiveTest")
     if (enabled != null && enabled.equalsIgnoreCase("true")) {
         try {
@@ -86,6 +94,7 @@ suite("test_hive_orc", "all_types,p0,external,hive,external_docker,external_dock
             search_in_int()
             search_mix()
             only_partition_col()
+            decimals()
 
             sql """drop catalog if exists ${catalog_name}"""
 
@@ -103,3 +112,4 @@ suite("test_hive_orc", "all_types,p0,external,hive,external_docker,external_dock
         }
     }
 }
+