[GitHub] [gobblin] homatthew commented on a diff in pull request #3632: [GOBBLIN-1774] Util for detecting non optional unions Hive tables

["homatthew (via GitHub)" <gi...@apache.org>]

homatthew commented on code in PR #3632:
URL: https://github.com/apache/gobblin/pull/3632#discussion_r1093863228


##########
gobblin-hive-registration/src/test/java/org/apache/gobblin/hive/metastore/HiveMetaStoreUtilsTest.java:
##########
@@ -212,4 +217,84 @@ public void testGetHiveTable() throws Exception {
     Assert.assertEquals(fieldA.getType(), "int");
 
   }
+
+  @Test
+  public void testContainsUnionType_AvroSucceeds() {
+    final String databaseName = "db";
+    final String tableName = "tbl";
+    final State serdeProps = new State();
+
+    serdeProps.setProp("avro.schema.literal", "{\"type\": \"record\", \"name\": \"TestEvent\","
+        + " \"namespace\": \"test.namespace\", \"fields\": [{\"name\":\"aUnionField\", \"type\": [\"string\", \"int\"]}]}");
+    HiveTable hiveTable = createTestHiveTable_Avro(databaseName, tableName, serdeProps);
+
+    Assert.assertTrue(HiveMetaStoreUtils.containsUnionTypeColumn(hiveTable));

Review Comment:
   non optional uniontypes in avro are represented as a ["type1", "type2", ...] where the first type is the default. See https://avro.apache.org/docs/1.10.2/spec.html#Unions



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