Emr

Emr

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mapreduce capacity 조절하기

기본 설정 http://docs.amazonwebservices.com/ElasticMapReduce/latest/DeveloperGuide/TaskConfiguration.html
Bootstrap Actions에 추가
- Configure your Bootstrap Actions
  - Action Type : Configure Hadoop
  - Optional Arguments : -s mapred.tasktracker.reduce.tasks.maximum=5

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