wangwei1025 commented on a change in pull request #15939:
URL: https://github.com/apache/flink/pull/15939#discussion_r640356024



##########
File path: 
flink-formats/flink-orc/src/test/java/org/apache/flink/orc/OrcFileSystemITCase.java
##########
@@ -164,4 +167,40 @@ public void testOrcFilterPushDown() throws 
ExecutionException, InterruptedExcept
                 "select x, y from orcFilterTable where g = timestamp 
'2020-01-01 05:20:00' and x = 'x10'",
                 Collections.singletonList(Row.of("x10", "10")));
     }
+
+    @Test
+    public void testNestedTypes() throws ExecutionException, 
InterruptedException {
+        String path =
+                
this.getClass().getClassLoader().getResource("test-data-nested.orc").getPath();
+        super.tableEnv()
+                .executeSql(
+                        String.format(
+                                "create table orcNestedTypesTable ("
+                                        + "boolean1 boolean,"
+                                        + "byte1 tinyint,"
+                                        + "short1 smallint,"
+                                        + "int1 int,"
+                                        + "long1 bigint,"
+                                        + "float1 float,"
+                                        + "double1 double,"
+                                        + "string1 string,"
+                                        + "middle ROW<list ARRAY<ROW<int1 
int,string1 string>>>,"
+                                        + "list ARRAY<ROW<int1 int,string1 
string>>,"
+                                        + "map MAP<string,ROW<int1 int,string1 
string>>"
+                                        + ") with ("
+                                        + "'connector' = 'filesystem',"
+                                        + "'format' = 'orc',"
+                                        + "'path' = '%s')",
+                                path));
+
+        TableResult tableResult = super.tableEnv().executeSql("SELECT * FROM 
orcNestedTypesTable");
+        List<Row> rows = new ArrayList<>();
+        tableResult.collect().forEachRemaining(rows::add);
+        assertEquals(

Review comment:
       append number of rows validation




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