Posted On: Dec 31, 2020
MR stands for MapReduce. The Difference between MR1 and MR2 are as follows:
The earlier version of the map-reduce framework in Hadoop 1.0 is called MR1. The newer version of MapReduce is known as MR2. MR2 is more isolated and scalable as compared to the earlier MR1 system. MR2 is one kind of distributed application that runs the MapReduce framework on top of YARN. MapReduce performs data processing via YARN. Hence Yarn execution model is more generic than the earlier MapReduce model.
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