How do I ensure that there’s only reducer for my EMR Streaming job? Is there any way to do this from the web frontend when I’m creating a new Jobflow?
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How do I ensure that there’s only reducer for my EMR Streaming job? Is there any way to do this from the web frontend when I’m creating a new Jobflow?
You can configure Hadoop in the bootstrap action using the –arg flag. Specifically to your question you can set the mapred.tasktracker.reduce.tasks.maximum to 1.