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Accelerate Spark on EMR Serverless with larger workers and shuffle-optimized disks

calendar_today July 29, 2026 person Karthik Prabhakar domain aws-glue

Amazon EMR Serverless now supports a 32 vCPU / 244 GB worker configuration for the most demanding Spark jobs. Across 126 TPC-DS and TPC-H queries, larger workers delivered an average 29% faster query execution and 29% lower cost, with the biggest gains on shuffle-heavy, multi-table join queries.

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