lirui-apache commented on a change in pull request #9927: [FLINK-14397][hive]
Failed to run Hive UDTF with array arguments
URL: https://github.com/apache/flink/pull/9927#discussion_r336815992
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File path:
flink-connectors/flink-connector-hive/src/main/java/org/apache/flink/table/functions/hive/conversion/HiveInspectors.java
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@@ -312,9 +313,11 @@ public static Object toFlinkObject(ObjectInspector
inspector, Object data) {
ListObjectInspector listInspector =
(ListObjectInspector) inspector;
List<?> list = listInspector.getList(data);
- Object[] result = new Object[list.size()];
+ // flink expects a specific array type (e.g. Integer[]
instead of Object[]), so we have to get the element class
+ ObjectInspector elementInspector =
listInspector.getListElementObjectInspector();
+ Object[] result = (Object[])
Array.newInstance(classForObjectInspector(elementInspector), list.size());
Review comment:
@bowenli86 I'm afraid it won't work because Hive allows empty arrays, in
which case we can't get an element instance.
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