Hive自定义UDTF问题

[alexwu2010]

请问一下 想在initialize方法里根据输入参数数量决定数据参数的数量，但是使用for循环进行添加运行的时候就会报数组越界的异常，请问是什么原因，挨个的添加就没有问题

		stringOI1=(PrimitiveObjectInspector)argOIs[0];
		int num=argOIs.length;
		List<String> keyList=new ArrayList<>(num);
		List<ObjectInspector> valueList=new ArrayList<>(num);
		for (int i = 0; i < num; i++){
			keyList.add("wei"+i);
			valueList.add(PrimitiveObjectInspectorFactory.javaStringObjectInspector);
		}
//		keyList.add("wei1-"+num);
//		keyList.add("wei2");
//		keyList.add("wei3");
//		valueList.add(PrimitiveObjectInspectorFactory.javaStringObjectInspector);
//		valueList.add(PrimitiveObjectInspectorFactory.javaStringObjectInspector);
//		valueList.add(PrimitiveObjectInspectorFactory.javaStringObjectInspector);
		return ObjectInspectorFactory.getStandardStructObjectInspector(keyList,valueList);