Why it matters
EMR is AWS Hadoop. Understanding shapes big data on AWS.
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The architecture
Cluster types: on-demand or Spot.
Frameworks: Spark, Hive, Presto, HBase.
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How it works end to end
EMR Serverless: no cluster management for Spark + Hive.
EMR on EKS: Kubernetes-based.
Spot for cost.
S3 as storage: separate storage + compute.