Balanaced Reduce PartitioningHadoop Performance Tuning A case study Milind Bhandarkar (Suhas Gogate) (Viraj Bhat) Do we really need to tune it ? Case study: RecommendaGon Engine 20 dedicated machines ($160,000 for 3 Years) 3 Hours runGme every day Needed 15% improvement per year Equivalent to 3 addiGonal machines ($24,000 for 3 years) 4 Full‐Gme programmers 2 months for needed improvement ($1
