sunchao commented on a change in pull request #2341:
URL: https://github.com/apache/hadoop/pull/2341#discussion_r495478153
##########
File path:
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/ReflectionUtils.java
##########
@@ -124,15 +124,29 @@ private static void setJobConf(Object theObject,
Configuration conf) {
*/
@SuppressWarnings("unchecked")
public static <T> T newInstance(Class<T> theClass, Configuration conf) {
+ return newInstance(theClass, conf, EMPTY_ARRAY);
+ }
+
+ /** Create an object for the given class and initialize it from conf
+ *
+ * @param theClass class of which an object is created
+ * @param conf Configuration
+ * @param argsType the types of the arguments
+ * @param values the values of the arguments
+ * @return a new object
+ */
+ @SuppressWarnings("unchecked")
+ public static <T> T newInstance(Class<T> theClass, Configuration conf,
Review comment:
Could you add a test in `TestReflectionUtils`?
##########
File path:
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/ReflectionUtils.java
##########
@@ -124,15 +124,29 @@ private static void setJobConf(Object theObject,
Configuration conf) {
*/
@SuppressWarnings("unchecked")
public static <T> T newInstance(Class<T> theClass, Configuration conf) {
+ return newInstance(theClass, conf, EMPTY_ARRAY);
+ }
+
+ /** Create an object for the given class and initialize it from conf
+ *
+ * @param theClass class of which an object is created
+ * @param conf Configuration
+ * @param argsType the types of the arguments
+ * @param values the values of the arguments
+ * @return a new object
+ */
+ @SuppressWarnings("unchecked")
+ public static <T> T newInstance(Class<T> theClass, Configuration conf,
+ Class<?>[] argsType, Object ... values) {
Review comment:
nit: `argsType` -> `argTypes`
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