Hi, Is it possible the last MapReduce job in the MR plan only loads something and stores it without any other processing in between? For example, when visiting some physical operator, we need to end the current MR operator after embedding the physical operator into MR operator, and create a new MR operator for later physical operators. Unfortunately, the following physical operator is a store, the end of the entire query. In this case, the last MR operator only contain load and store without any meaningful work in between. This idle MapReduce job will degrade the performance. Will this happen in Pig?
Thanks, -Gang
