Step 7: MapReduce configuration

You can increase the memory allocation for the ApplicationMaster, map tasks, and reduce tasks.

The minimum vcore allocation for any task is always 1. The Spill/Sort memory allocation of 400 should be sufficient, and should be (rarely) increased if you determine that frequent spills to disk are hurting job performance.

The common MapReduce parameters,, and are configured for you automatically based on the Heap to Container Size Ratio.