Hi, I don't quite understand the purpose of the ResetableIterator. ( http://hadoop.apache.org/common/docs/r1.0.1/api/org/apache/hadoop/mapred/join/ResetableIterator.html ).
The description says - This defines an interface to a stateful Iterator that can replay elements added to it directly. Note that this does not extend Iterator<http://java.sun.com/javase/6/docs/api/java/util/Iterator.html?is-external=true>. What's a stateful iterator and why do we need to replay elements added to it? Why does it not extend Iterator? I would appreciate any insight! -- Warm Regards, Deepak Nettem
