Hello! I've read on http://www.fromdev.com/2010/12/interview-questions-hadoop-mapreduce.html (cite): "The execution of combiner is not guaranteed, Hadoop may or may not execute a combiner. Also, if required it may execute it more then 1 times. Therefore your MapReduce jobs should not depend on the combiners execution. "
Is it true? Also is it possible to use the Combiner without the Reducer? The framework will take into the consideration the Combiner in this case? Thank you, Florin
