twalthr commented on a change in pull request #14103:
URL: https://github.com/apache/flink/pull/14103#discussion_r530846446



##########
File path: 
flink-java/src/main/java/org/apache/flink/api/java/ExecutionEnvironment.java
##########
@@ -1122,12 +1125,14 @@ void registerDataSink(DataSink<?> sink) {
        }
 
        /**
-        * Gets a default job name, based on the timestamp when this method is 
invoked.
+        * Gets the job name. If user defined job name is not found in the 
configuration,
+        * the default name based on the timestamp when this method is invoked 
will return.
         *
-        * @return A default job name.
+        * @return A job name.
         */
-       private static String getDefaultName() {
-               return "Flink Java Job at " + Calendar.getInstance().getTime();
+       @VisibleForTesting

Review comment:
       This method must not be public and thus part of the API. You can call 
`createProgramPlan().getJobName` for testing.




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